Exactly. Trump 2nd term would be far worse for Iran than Biden or Obama. Trump is the same guy now as before. If anything, he's going to remove all political "traitors" in Washington and double down on his policies against Iran, China, etc... once in office.
Look at Trump's actions during his first term, and I'm mostly paraphrasing here:
1). Pulled the US out of JCPOA that took years to negotiate and involved agreement from all major powers.
2). Imposed crippling sanctions on Iran as part of his maximalist pressure campaign against Iran
"Iran’s then-vice president, Eshagh Jahangiri, described the subsequent year as the “toughest” since the Islamic Republic’s inception. Trump’s campaign reduced Iran’s oil exports to a historic low of under 400,000 barrels per day, significantly slashing the country’s petrodollars, which represent about 70% of government revenues. Moreover, between 2018 and 2020, Iran’s national currency depreciated by more than 600%."
"The head of Iran’s Parliament Research Center has also highlighted the country’s current budget deficit of US$3.7 billion, warning a Trump return would necessitate being ready for “increased sanctions pressure and an economic shock.”
3). Trump ordered the killing of General Soleimani. Khamenei described Solemani as the mastermind behind Iran's military-network in the entire Middle East.
4). Trump wast quoted as saying to the Mullas. "You do what you have to do, but understand that I know where you live, your phone numbers, where your families are, and where you are at all times." That captures the essence of Trump and his way of doing things.