I want smaller breasts

I’ve been pretty insecure about my chest size for a while. I feel like my larger breast size has put my life on hold. I feel like I can’t wear certain things such as t shirts. I’ve tried losing weight but it never works. I went out to find a two piece today and I couldn’t even find one that even supported me well. Luckily I don’t have back pain from my breast size but it makes me very insecure at times.

I just look at these girls at school and on instagram and can’t help but think how easy they have it when it comes to clothes and clothes shopping.

What should I do?