There’s some amount of nuance to both I think. For America, Trump actually had less popular support for both elections he ran in. For Biden v Trump, he not only lost the electoral college but also got something like 10 million fewer votes, which is a blowout result for an election in a 2-party nation. For Hillary v Trump, he lost by a few million but was more strategic with the states he appealed to, winning several Rust Belt states by fairly thin margins. For Russia, polling works a bit differently in a dictatorship vs. a democracy. In a democracy, even if everyone hates the current leader the idea that people can vote them out often brings contentment, so a democracy can chug along with low approval. In a dictatorship, the dictator can’t be voted out and will often use fear to gain support, so they tend to poll highly because the people doing well love them and the people doing poorly are too afraid to say their feelings on the matter on government record. However, this means that if polling falls low that there are either fairly few people doing well or they no longer attribute their well-being to the state and that the people doing poorly are either bold or desperate enough to push through fear. This is extremely bad news for a dictator and may signal an impending change in leadership. With all that in mind, stable dictators like Kim Jun Un and President Xi Jinping poll very highly even during times of hardship, and Putin’s poll numbers falling to levels that would seem fine in a democratic nation could be dire news for his state.