kbin.social is really great. It’s the most active Lemmy instance and it connects with Lemmy and Mastodon so you’ve got both networks built in. The UX is, I feel, better than instances which use the Lemmy front end. The mobile site is actually functional. Sadly no app yet.

Of course the networks are much smaller than Reddit, but the conversations are much more qualitative. I honestly prefer it. Less soon scrolling.