Can't change string on my majesty

I really hate and suck at guitar care so I always take it to a professional for everything but since I can’t right now I am trying to handle it myself. I broke a string yesterday, I tried to cut the remaining but a piece of it seem to stuck in tuner peg (no idea how since it should be a literal hole and other side of the string weren’t knotted) I tried to pull out it with a plier but I am not sure if whole thing came or a piece of string still in there. I am trying to feed a new string but I can’t even see a hole to feed the string its just another smooth layer of metal where the hole should be, can anyone explain how does that freaking tuner works? Thanks.

Nevermind I just realized there is a tuner lock at the back lol I am terrible.