Do you think that the voters of Trump are far right? Some of them are, sure. The success of Trump was due to the failure of the Democrats, not the popularity of far right.
The rhetoric of the far-right definitely became more commonplace, it's not necessarily that the majority Trump's voters are far-right but he has definitely opened a floodgate to empower the far-right not only in the USA but in other countries as well.
If you hang out with Nazis, if you brush up with Nazis, you are very likely to become a Nazi yourself because no one that rejects Nazis would put themselves into that position... And I think it's pretty clear that Trump brushed shoulders with Nazis.
How did Trump and MAGA become successful if they're not popular?