[Android] unable to have comments from a particular subreddit show up public on my profile

I’ve been posting tons of comments on a subreddit community I’ve been a huge part of it, and for the last few months I’ve been communicating there, the comments I’ve made on that subreddit never appeared public onto my profile for some reason even though I’ve been posting a ton of them already. Can any of you explain why those comments haven’t appeared public on my profile whenever I post them and show me solutions or tips to fix these problems, so that my comments from that subreddit can appear public on my profile whenever I post them?