you could try this?https://www.amazon.com/Mavala-Stop-Biting-Sucking-0-3-Fluid/dp/B0000YUXI0
i rip the skin
I've been trying to stop doing this for 6 years now, I'm on the same page as you man it sucks.
i got braces so my teeth ended up realigning and now i can't bite my nails anymoreworked like a charm, get braces nal
I don't really Bite my nails, I just peel them. I don't know why I do it, but I've been doing it since I was 4.
one of those fidget cube things might actually help you
i bite the nails and the skin surrounding the nails off a lot