So basically my shower drain does barely drain a drop of water when I am showering my bathroom becomes a swimming pool after just a 10 minute shower it's very frustrating. My sisters use that shower as well and I am sure it's hair and stuff or it could be something else I am not sure since I have no expertise in plumbing what so ever. Is there any non super creative solution that I can do without spending a lot of money that I don't really have? All answers are appreciated, thanks in advance.

Remove the drain cover. Get a wire coat hanger, cut and straighten out one end, put a little bit of a hook on it. Stick down drain and twist around, pull out all the hair.

A cup of bleach sitting in the drain over night will usually dissolve hair.