No one person can tell you what it takes to be a compelling applicant. It helps to learn as much as you can, (from the colleges themselves,) about a target, so you see the nuances.
After all, you’re choosing where to apply. But then, they choose the kids they feel match. That’s more than grades, rigor, and some ECs. And more than your intellectual prowess.
Do the research. Imo, it’s worth it.