Reddit and Twitter are Left wing, Facebook and Instagram are more conservative?

wow Facebook conservative? Are u nuts?

I consider all five sites woke leftist.  Don't think so?  Try expressing conservative views on any of them and watch what happens.

Buttigeig. That's who they trained to be their guy. I think all the tech companies want less political interference. So they backed off for now until Buttigeig or someone else they groom is successful in politics. They don't want the Democrats betraying them, they don't want the Republicans because to them they are tyrants or something. The tech companies are the richest companies, as I understand it. They use algorithms to train politicians with, and I understand Obama is their model politician.They want their "people" in office so they don't have to worry about a backlash.  Yahoo is troubled with some bad ideas, the anonymous feature allows trolling without fear of reprisal. But it doesn't matter because the tech companies need to be sure the coast is clear. For now they are not too open about their Leftist intentions.

Looks like you're saying that Trump uses a Left wing site. Answers is what the users are. I see both left and right people here.

The social media platforms you just mentioned have no political affiliation. 

Only bias is by the users representative of the diverse American people!