@truth_seekers Hi! I have H/I cup, but I love working my chest! It’s always been one of the strongest parts of me lol
There are lots of exercises you can do. I really like dumbbells since they don’t really have to actually touch your chest, and you can bring them down as far as you’d like (or is safe). Flyes and chest press are really good with those.
For barbell, I just bring it down till it touches my chest. Depending on the bra I’m wearing, it’s not that much of a difference- maybe an inch at most? The girls usually slide into our armpits when we lay down, so that’s useful.
As for not feeling your pecs activate, that’s more concerning. I would be wary of which exercise you’re doing, because some can engage more muscles and cause the body to simply skip those that are weaker or not commonly used. Doing targeted exercises (like chest press or pec flyes) and doing them slow, with control, and less weight is usually how I activate and “find” the muscles I struggle with.
That all said, don’t forget to work your back as well! Us chesty people have a lot to lift in the front, and having a strong back can seriously take away a lot of the usual pain, and help with posture. My physiotherapist told me “Rows, rows, rows!!” And she’s totally right.
Best of luck!