are these enough extra curriculars to get into a good university?

By good university i mean like university of cincinnati, ohio state university, miami university(ohio), purdue, case western reserve.
my ECs are: Science Olympiad(all years of High school), Science National Honor Society(grade 11 and will continue to grade 12), I’ve been volunteering at the local library for three years, i’m on a teen advisory board that makes changes in the community, i’ve been playing piano for 4 years

also i will probably join one or two more clubs at my school either this year or next year(i’m a junior). im worried that i dont have enough extra curriculars so do the schools i’m interested in care THAT MUCH about ECs?? im not planning on going to harvard or stanford or anything.

Quality, not quantity, is the important characteristic for ECs. Doing just one is fine so long as you are fully engaged with it and you can express its significance (past, present and future) in a mature voice. Good luck!