Wrong.
You're in high school. Say this to yourself over and over and over again until you start believing it.
"High school is NOT real life."
High school is 500-5000 insecure teenagers forced into one building attempting to come to grips with who they are and what they're becoming. Everyone at your school - EVERY SINGLE STUDENT - feels the way you do, at least part of the time. Most feel it pretty much nonstop. Even the ones that make fun of you. Actually, ESPECIALLY the ones that make fun of you.
You WILL get into college. It may not be your first choice, or even your third, but you'll get into one. If only good talkers got into college, there'd be maybe a LOT fewer college students, and a LOT fewer colleges. If you're not easy talking, that's fine - let your grades or SAT scores or activities speak for you.
If your school offers a debate or public speaking course, take it. It'll be tough, but it'll help you get over your terminal shyness.
My college experience was apparently typical. In high school, I was the gawky pudgy loner that talked to nobody, and whom nobody talked to. In college, I totally changed. OK, not totally - I was still kind of pudgy. But I grew much more confident, got to know a lot of people, came out of the closet, and made some amazing friends that I still contact on a very regular basis almost two decades later. Your life won't be perfect in college, but it'll no doubt get a lot better.
And ditto with not being attractive. Yes, it's easier for the hottest guys to get dates. But look around - not just at high school, but at stores and coffee shops and wherever else. You'll notice it isn't just the hot people who have partners.

Your time will come.
Lex