Huawei is basically complying with US sanctions on Russia. After all these years they still have not achieved technological independence. As for ZTE they even have US spooks on their administration board courtesy of Trump.Huawei/ZTE no longer selling new base stations for mobile communication/internet in Russia ?
Russia basically cancelled their 5G rollout and are going to develop their own 4G equipment. Since most of their existing 3G equipment is Ericsson, Nokia, or Huawei, it is going to cost them quite a lot to upgrade the entire network to 4G.