I get where you're coming from. This platform made me realize once and for all that I'm not a leftist, despite thinking of myself as one for most of my adult life. But I'm definitely not a conservative either, so I'm rudderless. A lone wolf.
Anyways, to the original point, there are a lot of toxic people here. They were on Reddit too, but there was a lot more to dilute their presence. Be active with your blocklist, and use an app that allows you to filter words and instances. Those few actions will drastically change your experiences on Lemmy. It changed mine enough that I went from being an inch away from leaving forever, to actually enjoying most of my time here. And heck, I learned something about myself in the process, and continue learning every day. No sense in only being around people you agree with, that'll just stunt your growth as a person.