I am currently playing on 1.8.9, and after I just got into survival, it crashes. My 1.16 version doesn't work either, help

I WILL EDIT THIS THING. I have deleted this thing. Just don't trust Boogieman5891. or something like that. He will grief. here are screenshots. anyway I have this gui I dont care at all and I just wanna go play some more bedwars at the moment so bye.

How do you make it so someone you trusted can /trust someone else? or make them manager so they can let other ppl be trusted? help

Can people kill you if you have pvp off? If they can, what is the point of pvp off?