As a competitive player I can tell your right now that "community tournaments" are not going to bring back the competitive players.
Majority has moved on since it took you over a year to acknowledge the competitive scene, with community tournaments...
If you're serious about having an esport scene, it will have to come from your side. With possible LAN events or at least consistent tournaments with a decent prizepool. Because the ship of having the community organize small tournaments has sailed, those people have already put in a ton of time and are most likely done with that since it didn't pay off.
But that's just my opinion, ofcourse.