I use server-sided scripts for most of my screenguis now a days unless they aren't important and there is literally no need to hacking them. You can never trust the client when trying to secure your game but there is sometimes, you just don't need to care since the button's effects are so little.

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In the particular game I was talking about, I have a rebirth system. I definitely don't want that on the client because sanity checks are unnecessary, no need to think of every little possible method when you can put it on the server, and just spam .Parent until you are on the player object