He's not unpopular and many people do support him, unfortunately. Best case scenario, the silent majority didn't bother to prevent Trump and his lackeys from taking over the American government.
I don't think denying Trump's popularity is going to solve anything. America spoke out in support of this guy, twice, and it'll keep doing that unless the underlying issues are tackled.
As for election fairness: I haven't seen any credible proof of large-scale election fraud, not when Biden won, not when Trump won.