I think your just trying to be helpful, but ya it did come off as pretty patronizing. You've also assumed incorrectly that "getting better" is the most important thing when playing chess...

I play chess because I find it fun, relaxing and a great way to blow off stress. Studying opening and caring too much about rating ruins that. Rated play is awesome because I always get paired with someone of similar skill. I do feel I'm improving slowly, even if my rating does change much. I like to mix things up and often play strategies I know are bad because it leads to fun and novel positions.

And yes, I understand that I'm not a "strong" player. It's pretty obvious when lichess tells me directly I'm in the bottom ~30% lol.