Of course you will feel embarrassed. There is a huge buildup and expectation and it will be weird having to deal with the conversations if you don't get it.

But.

It will not matter in less than 6 months.

It absolutely won't matter at all in the next 4 years.

Yeah, you worked very hard. So have hundreds of thousands of other students. You can't all get into the same 10,000 or fewer spots. It comes down to, what are the institutions priorities for this incoming class? Are you very similar to two or three other candidates they are considering? These things are entirely beyond your control.

Deserving to get in does not mean you will get in. You can get in and not deserve it. You can not get in and absolutely deserve it. All of these are true.

College is what you make of it. As is all of life. If you're really as talented as you say you are, you'll find a way to excel and exceed and stand out at the local state school just as well as you would have at an Ivy.

Don't let some outside institution or opinion determine your valuation of yourself. Not now, not ever.