so i think i found the solution, i used the same guide like what you said, to: How to make a LIVE player counter V2
then I used the same checker settings like what you said, and then instead of directly connecting it to the end game, I connected it to a popup (saying min of 4 players needed) and the wire is from the checker to the popup of check passes > open pop-up and then I wired the popup to the end game pop-up closes > end game, and its working.