Breastfeeding

My baby had a tongue tie and she finally got it clipped around 9 days old. But she has been taking my milk and supplemented formula. But I haven’t been able to get her to latch. She will NOT latch at all. She does great with her bottle, but we do skin to skin for an hour and I’ll sometimes rub my nipple against the roof of her mouth and put a little breast milk on her mouth to encourage her but nothing is working. And for some reason my milk has decreased drastically. So I’ve been super upset about it, because I wanted to breastfeed my baby. And ended up formula feeding. Though, there is nothing wrong with formula but I chose breast milk because that is what I wanted to do for my baby. Plus I have PPD so I’m really overwhelmed....