I don't know how you managed that. I don't follow "toxic people" but Twitter just doesn't work. The use case for Twitter seems to be to follow important thinkers in areas you care about, so I get to hear what a renowned scientist had for lunch, an out-of-context reply from a computer security researcher said to someone else I don't know about something I don't understand, and that an F1 star took his family to the zoo.
Maybe I'm just the wrong audience for twitter. Facebook, as problematic as it is, has people I actually know, with their real names, and their real pictures, and their real life.
The nature of an "open" platform like Twitter seems to be specifically for people who want to hear from people they don't know, and unfortunately the content from those public figures is almost never about the thing you actually follow them for, because, guess what, people are multi-faceted.
Add to that the outrage-driven like/RT algo and I think it's toxic by default.