Get Boost if you haven’t tried it already. It just released and has resolved issues I’ve had with other apps while also just making the whole place seem nicer… it doesn’t feel buggy anymore.
Oh, as others have mentioned Lemmy.world seems to run fine! That + boost and I can’t recall having any of the issues you’ve mentioned
As far as the rest idk I’m still feeling like a newbie after 2-3 months