Sounds like you're on the right track once you're active in the community and comment a lot, it just takes some time to continue doing that. It's a bit hard to believe that you comment frequently when you have made only 173 comments in the past 4-5 months - that's only about one per day and that includes your replies to comments you get. So my first suggestion is, comment a lot more on literature by other underappreciated writers. Or make that one comment a day a very special and indepth one You could start by critiquing some work in the Monthly Critique Thread to the top of this forum.
Have you joined #CRLiterature? That's the best place to start in the literature community, groups-wise. I recommend you check out their journals and participate in a few of the projects/challenges/etc.