Well done, @chelleshao, for having done so well so early in your first year!
You are likely to find that friendships in college do matter, that the good ones take time to develop, and that they do so through shared experience. The shared experience can be an EC, if you get involved and stay involved with one in which you are genuinely interested.
It is also very often through your major, where the same people turning up in your classes over the semesters. On another thread you mention that you are a CS major. Some people might say that CS students are not typically the most outgoing of students, and some people might be right- but as a teacher of engineering students and the parent of a physics major, with quite a few physics, math and engineering students in my orbit, I can tell you that they can and do develop friend groups. It might take a time but they get there. Study groups are often a good way for that to happen.
On your other thread you mention being disappointed in your first round of results at college. Please know that many students stumble when they first hit college, and it often hits the highest achievers hardest. The ones who ‘won’ HS are sometimes caught off-guard by the differences between HS and college. Right now you are playing a new game with old rules, and you just need to make the jump to the new ones. “Just” might make it sound as if it will be easy, which it won’t be, but somebody with your track record is absolutely able to do it.
As @NorthernMom61 (a veteran CC poster, who really knows what she is talking about) pointed out you have a lot of resources available to you: professors, TAs, academic supports (help centers, etc) as well as online resources.
First step: look at your own tests and try to analyze what the underlying problems were. Did you understand the material, but run out of time? Did you focus your study in the wrong areas? Were you fine on the material covered in class, but not on the material you were meant to do on your own? Did they ask for solutions to be done in a different way than you are used to? and so on. Once you have teased out for yourself as much as you can, break it down. Figure out who is likely to be able to help you figure out solutions: learning center? TA? Prof? Be prepared to accept that you might have to learn different ways of studying. And…
Start a study group for yourself, especially in any subject where you are unsure of yourself (see how this circles back around to the original part of the post?!). Approach the most approachable person in (say) Calc and straight out ask ‘would you be interested in making a small study group for the next exam?’ The study group may only last that exam or that semester- doesn’t matter. You will be getting both an academic and social resource. Many first years are hesitant about being the first to reach out, but as the terms progress you are likely to end up in multiple study groups. Might as well be ahead of the curve as not!
You really can do this 
(apologies to the OP for hijacking the thread)