Now it feels like the left runs the entire internet because most sites don’t want Republicans there.

It is interesting that this is your experience, but I can say that this is objectively not true. Especially if you're on social media and not logged in, the content has a far right bias, there's often at least one recommended video which goes in that direction. About twitter was one study that twitter systematically preferred right-wing content… before Elon bought it. And I mean, everyone knows about Facebook.

The fascist Bolsonaro (he literally said the dictatorship was Brazil's best time and that its only mistake was to not torture enough; you gotta agree he's a literal fascist) movement just won the presidential elections because of Facebook and social media. It is a massive system driving people especially to a far-right extreme.

What I can say about "Can’t disagree with BOTH sides because neither can fathom that." is well… I mean, yeah, if you disagree with both, both probably won't like that haha. But there is one problem to disagree with both sides if one side of them is e.g. literally trying to eradicate trans people, trying to deny them their existence, discriminate, etc., and also literally trying to undermine democracy and overthrow elections and is actively restricting who is able to vote, and the other one… isn't.
I can understand if someone financially benefits from Republicans, or is business-friendly or such, but criticising both as in that both are the same amount of bad is just wrong and harmful, because we just got to the point where only one side got completely off all norms and in an antidemocratic and borderline genocidal.
(And for the record: I'm not a US-American. I am certainly not a fan of the US Democratic party. And I do think that of course it's good to criticise everyone who does bad stuff, and to point that out.)