Is there a way to make a custom data saver? what I mean is that you have a save button that will get the players name, then, it will get their data and when someone joins, it will see if their name is one of the names saved. if it is then it will load the information into the game keeping all your progress for perks and custom skins. I need this for a custom dead by daylight game that will take a lot of circuits, and other games too like my hello neighbor game. thank you for taking your time to read this and please help me figure this out if possible.
if it’s possible, please help me with a load button too 
What you are looking for is cloud variables. Spawn in a variable and enable the Cloud option. This will make the variable save its value between subrooms and for when you leave/rejoin
Note that you cannot nor should save data for other players, you can only store data locally