Honestly after I noticed the declining users on Lemmy I started using reddit again, it just has more activity on a lot of niche communities I'm interested in.
However I still use Lemmy almost daily since I like the content and comments here more, and it's the kind of platform I enjoy, just like the Reddit of old.
Reddit is a better platform due to the number of users it has. No amount of optimization can make Lemmy better than reddit if there's no enough users to create content and participate in the discussion.
I'm still not going back though. It's not essential for me. I already spend way too much time online so if there's one less platform to mindlessly scroll thru then that's only a good thing. I don't really experience FOMO because I don't know what I'm missing out on.
Would have been cool of there was a legal way to migrate some of the core content created by users on Reddit to Lemmy. I'm not even talking about media like images and video. Just conversations and opinion posts, guides, help and advice.