Simple Mob Heads Drop

Hey everyone. I made this simple data pack for java edition because getting mob heads in vanilla survival is way too hard. Waiting for thunderstorms and charged creepers takes too much time. ​With this data pack, when you kill mobs they have a chance to drop their head. I mainly made this so I can collect heads and use them to decorate my survival base. ​How to use: Just download the zip file and put it inside your world's "datapacks" folder. You dont need any modloader like fabric or forge for this because it is just a plain data pack. ​It is very lightweight so it wont cause any lag on your server or singleplayer world. ​If any mob is not dropping its head or the drop rate is too crazy, just tell me in the comments and I will try to fix it when I get free time.