I’m feeling so uncomfortable because of my very small breasts

Hi.

I have very small breasts, not even a full A. I also have a very complicated shape, I only have volume on the lower half and on the upper I’m flat. So most bras also the one in A are too big and do not sit properly and are very uncomfortable. It’s also really hard to find tops that fits. Most of them I can’t wear because due to the lack of volume. That’s why in summer I only wear shirts and under that a bustier top with 3 to 4 inserts, but this helps only a little bit. Do you have any recommendations for bras, inserts, or anything else?

Any recommendations for bras?