I feel like, all my life, I have always been searching for something that I've never found. A close group of friends, a meaningful relationship, and to accomplish big things. Im outgoing, yet have trouble making close friends, I am very caring and according to a lot of people "cute" yet cant seem to meet any guys, and want to acccomplish big things but not sure where to start. Yes im young (high school senior), but im at a point in my life where I feel very disconnected from everyone, and not sure how to dig my way back out. I feel like im doing something wrong and getting down on myself. Advice?

I think that a lot of teenagers go through this. From 15 or 16 through til 18, kids are really just trying to find themselves before they have to leave home, and they're starting to know who they are. It's not uncommon to start questioning yourself, and kind of feeling down because you feel like you don't have all the things you want.
You're a senior so when you go off to school (which I'm assuming you are since you have big dreams) you will be meeting a ton of new people, you will be able to figure out more about yourself, and kind of create who you want to be. You will be busy, and having fun at the same time... and the way you are feeling now will just kind of disappear because more than likely everything will fall into place if you let it. Don't let these thoughts overwhlem you or take over who you are, because to be honest... you're just going to end up disappointing and failing yourself.

Maybe you have changed from the people you have been hanging out for a few years now, and that's not necessarily a bad thing. It may be lonely at times, and you may think there is something wrong with you, but at the same time, you have a lot going on in your life. You have school, grades to make, you have to wonder which schools you're going to be getting into, where you're going to be moving. It's a lot to take on... and have on your mind. So just try to relax and enjoy the rest of your highschool career.