Discovering new communities

One thing I liked (and sometimes disliked) about Reddit was that my feed was a mix of posts in communities I'd joined and a few suggestions of posts from subs The Algorithm™ thought I might like.

On Lemmy I'm realizing I'm starting to fall into a bit of an echo chamber situation because I basically only see stuff I'm already a member of, unless I explicitly go to All or scroll the list of communities.

Are there less involved (lazy) ways of discovering new stuff and broadening my horizons a bit?