I am about to study piano as my college course and maybe at the age of 23/24 I think (will be alright?) But I really love the piano and I would love to share my knowledge about it. lolz maybe I am dreaming to high lol
but hey, if you work hard and reach for it I think you can achieve it (probably or not) Oh and btw not that struggling though I can play La Campanella by ear XD
If you are still struggling with grade 2/3 piano after having had lessons for over 8 years, I would say your chances of becoming a piano teacher are quite low.
Someone will be willing to pay. If you're charging less than a more accomplished teacher, someone's going to pay you. They (the parent of the student) probably won't care as much about cranking out a prodigy, might drop eventually, etc., but they would pay. And then you'd be teaching lessons and learning how to teach better.