It's sometimes difficult to get across to interested people that only because you are decent at doing something, you can't automatically also teach it to others. At least not in a structured, pedagogic way. Teaching is a skill of its own.
Over the years, I have had various people ask me to teach them German, but I didn't even know where to start or how to do it in any efficient, focused way, and when I honestly explained this, the reactions were sometimes along the lines of "you just don't want to do it". No, I couldn't do it, because I'm not a teacher of languages. I'm happy to converse with German learners, offer corrections and explanations to specific questions, but real teaching goes far beyond that.
I think that is the point of this thread, and I think it's a good one.