How can I make my fighting game hat system better?

I've been working on recreating King of the Hat in Roblox and I've mostly managed to recreate the entire hat system, but I've realized that it is definitely not good I need to figure out how to implement a better system, but not sure how to do it.

Because King of the Hat is a fighting game I need to figure out hot how to distinguish players from from themselves and opponents I also need to figure out how to keep track of who owns what hat which I've done a poor job of in my code.

Because my code is to long to post here I'll just give a pastebin link https://pastebin.com/1xda18HQ