jointhefediverse.net seems to be a commonly linked resource for directing people to join the Fediverse.
Curiously, it does not list Lemmy under the list of Reddit alternatives. Their GitHub README explains why.
Previous relevant discussion: https://lemmy.ml/post/78808
I’m not sure about self-hosting (not feasible for me right now) but as a user it’s not bad. I can say I haven’t seen anyone complaining about it yet.