Reddit is (no longer) Fun.
Like others, the API change was the final straw. I used Reddit is Fun (RIF) for years, even paid for the full version, because both the official Reddit app and the mobile web interface were terrible. I was also using the old web interface with the Reddit Enhancement Suite, and that went on "maintenance mode". Overall, Reddit just reached a point that the enshitification was getting to be too much for me to stomach. So, here I am.
I've found Thunder to be a great replacement with some modern, gesture and UX friendly enhancements. Raccoon for Lemmy is pure magic and I highly recommend it as well, but the UX and UI are more modern and has less of that RIF, old-school forum thread scroller vibe.
Connect for Lemmy on my Android phone has worked great! The interface is almost, but not quite, 1:1 with RIF.
It was pretty buggy at launch, but here we are about a year out, and I'm not sure if I remember the what/when the last bug I encountered was. That is to say, the devs for connect are on top of stuff with regular updates which is nice.
I tried connect first, but maybe that's when it was buggy, because I switched to Boost. I guess there's nothing wrong with Boost, but sometimes it gets weird interacting with embedded pics and unusual text.