Rejected from all my colleges with very high grades

In hindsight, I made a mistake. I didn’t apply to any lower school because I thought that I had a great chance for UCI and SD. I applied to those plus a few other T20. If this is the case, I think my best course of action is to take a gap year and reapply with a more diverse platter of colleges?
My only worry is that colleges will automatically reject me if they see I had applied and been rejected before. Plus I do not know if I had some hidden problem in my application.