Yes I do, because my own experience of existence suggests I have it. Could that all be an illusion? Sure. But believing I don’t have free will would pretty much deny the existence of my self, which, being myself, I’m not really capable of, nor would I want to do that.
Comparing the time when I joined Lemmy around 2 years ago to now, I would say that the general tone has become somewhat more unfriendly. A larger userbase might be a contributing factor, but I think it’s also the political climate in the west becoming a lot worse recently with many divisive issues and people being more stressed about the state of the world.