Mind sharing your methodology? I doubt a single person could accurately determine this without a very well laid out process.
Every study I’m finding, even when specifically searching for left biases, concludes Twitter is very right leaning. Which makes sense: Its owner is very openly right-wing, repeatedly posts right-wing-leaning fabrications, has shown to be thin-skinned and actively amplifies his own account and those who spout right-wing views, so it’s no wonder most who remain are those who agree.