My nails are terrible

I've been having issues with my nails peeling, bending, cracking, and just in general, being terrible.

I had to cut them down super short due to both my index nails and a middle nail just cracking in the middle of the grow out.

Is there anything that anyone recommends to bring them back to healthy?

This has only really been a problem in the last year; I recently started taking a multivitamin per dr orders, but it doesnt seem to help much.

Toes are not a problem, just hands.