There’s a bigger question here…what’s a “good college”?
Do not confuse good with popular. There are LOTS of schools that are pretty easy admits that are great at educating students and helping them get their lives on the right path. Beloit College and Juniata are two fine examples.
The selectivity of a school tells you one thing and one thing only, how popular it is and thus how many applications it draws. It tells you nothing about what your experience as an undergrad will be like. Some of the highest ranked, most difficult admits have the biggest classes in the nation. Some are known for poor quality teaching.
By all means, follow the advice above. It will be helpful no matter where you apply and end up. Do dig in though and learn how to define what “good” will mean for you.