u/Worried-Fortune-5685

can someone help me? the black stuff is just nail polish so ignore that. but why does my nail look kinda discolored? and why is it lifting? ive done nothing to it so im really not sure what the cause is. i never even touch my toes except to paint them. can anyone tell me what this is??

can someone help me? the black stuff is just nail polish so ignore that. but why does my nail look kinda discolored? and why is it lifting? ive done nothing to it so im really not sure what the cause is. i never even touch my toes except to paint them. can anyone tell me what this is??