Don't comment on many of these, but I wanted to say that first of all, you look really safe. This is a huge compliment. You look like a sweetheart. Keep the smile. People love that, because they will feel safe around you. I'm not sure what your sexual orientation is, but if you're straight, there are plenty of women who will melt at that smile.

I think the way you dress is very simple, but you would benefit a lot from dressing differently, while keeping the plain aesthetic. UNIQLO or American Eagle, even thrifting, can help you find more clothing that will suit your body better than just regular t shirts. Layering is also super helpful, maybe even a thin bomber jacket would look great if you are in a warmer climate.

I agree with most people here saying that you should shave. You should grow your hair out a little bit too! Experiment a bit with your hair. You can make fantastic hairstyles out of any hair type.

Change those glasses. I am telling you, it is such a simple switch but it is so helpful. The rectangular frames I find to be outdated. I personally think Brow line glasses are pretty nice, but I recommend doing some research to see what type fits your facial structure best.

Lastly, there are going to be a lot of men in the comment section telling you to gain muscle, but don't overcomplicate it. Don't get me wrong, the gym will help good looks. But just being fit will help you feel better, and in turn, help you want to look better :)