Twitter is where you're meaningfully in control of who you follow and what you see. That means it's on you to curate that, and many won't want to do that. I was on Twitter for a while before I found the real niche and strategies that made it my favorite place. Once I got it, the curation became an activity that I enjoy, part of the loop, and it's rewarding when it's working well. If you're seeing fake news regularly it's because you want to see it.
One key thing to do is avoid the algorithmic timeline, Twitter does force bullshit down your throat to maximize engagement metrics, but where is that not the norm anymore? My Twitter experience might crumble if I lose access to the app that removes ads and suggested content from the timeline and keeps it fully chronological.