My 30g boobs need help

I can’t find a good bra for my boobs. They’re big (30g) I’m 18. The only bras I can find are either like super lacy and if I wear a tight shirt it has like weird lines or like a maternity bra. I live in a cold place so padding is good just to not show my nips. I just want a bra that isn’t like I’ve just had a kid(I’ve never had one) or like something I’m trying to seduce someone wearing. I really would love a bra that can do like at least semi low cut because like the only ones I can find are just everything covered or nothing. I mean I know I’m asking for a lot but I also just don’t want to spend a lot of money that I don’t have on a bra. Pls help