Hello, just wanted to add my story.
My dd had a normal birth. I had skin to skin immediately after and expected her to find my nipple immediately and we'd feed, bathed in golden light blah blah. Week that didn't happen. Not only did she not latch, but she didn't even attempt to find my nipple. Occasionally she would head butt it or lick it, but she didn't even nearly latch. I saw countless bf specialists all of whom gave the usual advice, skin to skin etc. They tried to latch her, but they couldn't and just observed that it was odd (very bloody helpful).
On day 2 I began expressing colostrum and on day 4 my milk came in. I continued to expires and bottle feed her the expressed milk. I kept trying to get her to latch and this made me very distressed. I didn't think I would be able to keep up the expressing routine, but just had the attitude that even just one more day was doing her loads of good.
After 4 weeks, for no real reason, I tried a nipple shield. She latched for about 10 seconds! Not much, but it was the best we'd had. I kept up and gradually increased so that one feed a day was fully directly on the boob (with nipple shield). I kept increasing until by the time she was about 10 weeks old I was exclusively breastfeeding directly from me. She's now 24 weeks and I'm still going strong. I usually still use the shields, but occasionally if the conditions are nice and calm etc, she will latch without them. She still isn't a great feeder because she is betty easily distracted, but she's gaining weight perfectly. It's been a hard journey.
I know most bf consultants would tell you to avoid nipple shields, but for me it was a choice between using the shields and stopping breastfeeding.
I really feel for you, it would be so much easier if it was a crap latch because at least there's something to work on! No one seems to know what to do when they just won't latch at all.
Well done you for trying. If you can find a way to make it work, then keep going. If you need to move to formula for your own sanity, that is fine. It's not because you're a failure and your baby will still thrive on formula.