SAGGY BOOBS AT 16

My bra size is around a D-DD but my boobs sag a lot and it makes me uncomfortable to wear certain clothing. My mom will sometimes say i should put a bra on to lift them up in outfits but then i feel uncomfortable it’s “too booby”

i know it’s normal for boobs to sag but it just makes me feel so bad about myself and i already wish i had small boobs in the first place

should i start to wear a bra again or should i just let it be??