Advice to heal my nails from whatever I've done here
I've been a nail biter for as long as I can remember, but recently, when I've bitten my pointer nail specifically, the top layer(?) peels off all the way to my nail bed. I've done this multiple times to different parts of my nail, which is why the 2nd pic looks the way it does. (And in the 3rd pic you can see how the nail isn't flat and even with my skin like my middle finger.
Whenever the top part grows long enough, I get the urge to bite it or pull it out, so I can never grow it out. Now, when I press on my skin just above my nail bed, it hurts a little. Should I consult a dermatologist or any doctor? Or is this something I can resolve with at home remedies.
(For context, I've tried bitter nail polish, but I just bite straight through them regardless of how vile it tastes. I've also tried jojoba oil and other nail growth things, but never committed enough to make them a habit. It's really bad 🥲)