11 day old newborn won’t latch

I’ve been trying... and trying... and trying. He just gets mad and stops. So I pump.. I had to formula feed for a few days though because I didn’t have any milk yet. I get 2 ounces in each boob when I pump for 15 min now. But he still won’t latch. Is there baby’s that just won’t do it? Should I keep trying? I mean, I’m going to pump if he don’t ever want to latch, but I was wondering if it’s still early for him to not catch on yet..

Even tried in hospital. Got help but he wouldn’t latch for them either.