Breastfeeding/pumping problems help plz 😔

My LO is 3 1/2 weeks old and at birth he latched right away (I had a Csection.) but after the first day he had a lot of difficulty with latching. And it was such a big problem that he ended up losing almost a pound and so we ended up having to bottle feed with formula and pumped breast milk. When I came home from the hospital and started pumping I was making 4 ounces a day. And now Im lucky if I even make 1 ounce.

I’ve been getting him to latch again lately without the nipple shield but after a while he gets so angry cause it won’t come out fast enough and we keep trying to force it in his mouth cause he un latches but yesterday his anger was so bad it ended up giving him bad diarrhea.

Now since I’m pumping I’ve tried all the little tips and tricks like skin to skin,getting him to suckle,eating/drinking oatmeal,drinking Mother’s milk tea,drinking water,taking fenugreek,and some of it helped me when I was starting to dry up after 2 weeks but my supply is still low. I’ve even used an electric pump,a manual pump,and self expression. I just need help idk what to do cause I feel so down when I see some of these mothers making like 6oz per boob per pumping session 😔