Joined yesterday coming here from Reddit. My favourite app no longer works (Reddit is fun) and I just can't get myself to use the official app. Lemmy seems pretty cool so far, only missing a few subs that were not super large on Reddit but are not really viable here due to a small number of users. Hopefully that will change if the number of users keeps growing so fast.
Make sure you look for communities from lemmy-verse.net in order to search all communities and not just ones someone on your instance has already found.
I'm here for the same reason. RIF finally stopped working and I found Sync. Slowly but surely I'm finding communities that interest me but I'm not sure how to setup "a feed" just yet. I'm not going back to Reddit (it's literally becoming a bot and self promotion farm) so I hope to find positive ways to contribute here.