Lemmy is all I use, and since it’s so small I just browse /all and when I keep seeing subs I’m not interested in (or a language I don’t understand) I just block them so I don’t see them anymore.

Then I’ve instance blocked a couple places because of how their mods/admins act so I don’t accidentally stumble into a sub from that instance.

You could try to curate a list of subscriptions, but I just don’t think Lemmy is big enough for that yet, and you’d miss new subs.