Why does this have to be so hard?

This is more of a rant I guess.. 20 weeks pp and a severe under supplier. When I say I’ve tried everything I mean I tried EVERYTHING and the most I’ve gotten in one day is 6oz while pumping. My son started latching well after a frenectomy and I thought it would be what I needed to increase my supply but it never went up. I’m struggling. I feel like I’m missing out on so much because I have to go pump… but for what? I wanted this so bad. I still want this so bad. It doesn’t feel fair.