9:54 you need to turn off AFK mode, it's basically to attract your attention, the AFK mode is there for when you're AFK and you don't want to be spawned in game, so you won't be chased down/ killed .
On diva tower, he never saw the actual secret. I was trying to play along with him and I got curious and I pressed the ??? button if you wanna know what happens next play yourself it’s creepy
That particular game you're talking about with the chair, tables and shelves and other stuff, that game's called 3008, I think it's an SCP game where the workers in the yellow stripe shirts try to kill you for staying in the store, and also it's like a survival game where you build shelters find food and not die, the reason why I know this game, is cuz my niece used to play this once (not sure if she still plays it though), also the store is basically an endless store so there's no exit (I tried to explain the game, I'm not used to explaining things, so I'm sorry if I didn't explain it good enough)
14:30 they prentend to be your friend dude but what happened is they changed their name into “Matogeguyskull?” And their avatar turns into black (hopes this helps!)