Here is a genome map of what viruses have been identified in China. This map is shared by Dr Peter Daszak. It looks like it is sourced from the Medical Research Council, the University of Glasgow, and the Center of Virus Research.

The closest cousins to the SARS-CoV-2 virus appears to be the viruses: RatG13 and the Pangolin-CoV. Lets see how the many versions of the Wuhan lab leak theory look like with some critical thinking:
1) "SARS-CoV-2 is natural. But it leaked from the WIV":
SARS-CoV-2 was not in the inventory of the WIV before the Wuhan outbreak of 2019. SARS-CoV-2 was not even identified by the WIV prior to that outbreak. So no, this theory is a dead end.
But...but... what about that super dangerous bat cave in China? The one that killed some virologists. The one that China restricted entrance to. Ok, but that place didn't have SARS-CoV-2, it was another virus. But...but... the Chinese definitely lied! It definitely is SARS-CoV-2! Ok, is there evidence? No. But what is evidence right now is that there was another dangerous virus in that cave. In any case, that's where the WHO is gonna check out soon, and China is giving them access. China is not hiding anything. If SARS-CoV-2 really did come from that cave, then wouldn't it just easily spread around the area instead of just appearing in WIV and Wuhan? Bats can fly you know.
2) "SARS-CoV-2 is man-made, and it leaked from the WIV":
First of all, its not in the inventory of the WIV prior to the Wuhan outbreak. So quick answer is no, SARS-CoV-2 was not 'made' there.
But...but... they must have covered up their tracks! They definitely have created SARS-CoV-2 from one of those viruses! Ok, so which one of those natural viruses was 'converted' into SARS-CoV-2? Let's say RatG13. Then what is the mechanism to do so by human intervention? 'Gain of function' research? Is there evidence that that was done? No. So its another dead end.
But... but... I don't trust China and the WIV! They must have lied! Ok, then have someone else recreate SARS-CoV-2 from RatG13 or the other found viruses. Could it be repeated in another experiment? If not, then its not science! Its just a hypothesis. And hypothesis is not evidence!
3) "Natural or not. Covid-19 definitely must have leaked out of the WIV!"
Well. If that was really true, then this would have spread very quickly among the WIV staffs. The whole WIV would have been shut down and quarantined. Like, what *ahem* Fort Detrick had done when it had its own 'lapse of containment'. Huanan Seafood Market was shut down immediately when it was suspected to be a mass spreading place. But no, the WIV managed to continue their work helped to sequence the genome of the virus and share it with the world. Kinda impossible if Covid-19 was going around that place. Anyway, the WIV is a BSL-4 lab that is audited by and regularly communicates with international scientific bodies. Alarm bells would have been ringing in international scientific circles if there really was an outbreak of a mysterious virus like SARS-CoV-2 inside there. The lab would have been flagged by foreign scientists for shut down and quarantine. There would have been a paper trail for that, which is not the case.
With some common sense, it is relatively easy to see that the Wuhan lab theory just doesn't add up.

The closest cousins to the SARS-CoV-2 virus appears to be the viruses: RatG13 and the Pangolin-CoV. Lets see how the many versions of the Wuhan lab leak theory look like with some critical thinking:
1) "SARS-CoV-2 is natural. But it leaked from the WIV":
SARS-CoV-2 was not in the inventory of the WIV before the Wuhan outbreak of 2019. SARS-CoV-2 was not even identified by the WIV prior to that outbreak. So no, this theory is a dead end.
But...but... what about that super dangerous bat cave in China? The one that killed some virologists. The one that China restricted entrance to. Ok, but that place didn't have SARS-CoV-2, it was another virus. But...but... the Chinese definitely lied! It definitely is SARS-CoV-2! Ok, is there evidence? No. But what is evidence right now is that there was another dangerous virus in that cave. In any case, that's where the WHO is gonna check out soon, and China is giving them access. China is not hiding anything. If SARS-CoV-2 really did come from that cave, then wouldn't it just easily spread around the area instead of just appearing in WIV and Wuhan? Bats can fly you know.
2) "SARS-CoV-2 is man-made, and it leaked from the WIV":
First of all, its not in the inventory of the WIV prior to the Wuhan outbreak. So quick answer is no, SARS-CoV-2 was not 'made' there.
But...but... they must have covered up their tracks! They definitely have created SARS-CoV-2 from one of those viruses! Ok, so which one of those natural viruses was 'converted' into SARS-CoV-2? Let's say RatG13. Then what is the mechanism to do so by human intervention? 'Gain of function' research? Is there evidence that that was done? No. So its another dead end.
But... but... I don't trust China and the WIV! They must have lied! Ok, then have someone else recreate SARS-CoV-2 from RatG13 or the other found viruses. Could it be repeated in another experiment? If not, then its not science! Its just a hypothesis. And hypothesis is not evidence!
3) "Natural or not. Covid-19 definitely must have leaked out of the WIV!"
Well. If that was really true, then this would have spread very quickly among the WIV staffs. The whole WIV would have been shut down and quarantined. Like, what *ahem* Fort Detrick had done when it had its own 'lapse of containment'. Huanan Seafood Market was shut down immediately when it was suspected to be a mass spreading place. But no, the WIV managed to continue their work helped to sequence the genome of the virus and share it with the world. Kinda impossible if Covid-19 was going around that place. Anyway, the WIV is a BSL-4 lab that is audited by and regularly communicates with international scientific bodies. Alarm bells would have been ringing in international scientific circles if there really was an outbreak of a mysterious virus like SARS-CoV-2 inside there. The lab would have been flagged by foreign scientists for shut down and quarantine. There would have been a paper trail for that, which is not the case.
With some common sense, it is relatively easy to see that the Wuhan lab theory just doesn't add up.