I was looking for a place to share my two favorite Mastodon and Lemmy clients, they are called Voyager Connect Boost for Lemmy and Moshidon for Mastodon (if you are really serious about privacy I recommend Connect still)
(the official Mastodon app works fine though, you just can’t follow new hashtags from it)
They are very good, try them out sometime 👍 (I’ll update this post whenever my opinion changes)
Have you tried out Firefish? It’s another micro-blogging site like Mastodon, but the UI looks better in my opinion. You can follow Mastodon users on there and a bunch of other Fediverse content as well. They’re still working on an official app, but the PWA works quite nicely.
Its still lacking a good threaded view for Lemmy content IMO. The Friendica default frontend does it much better.