Help for disabled player.

This might help;

You can disable cross play by going Main Menu > Open up options > Account tab > Highlight Crossplay and select Disable > You will no longer be matched with players on PC or other consoles.

There is a chance that your achievements are disabled for that world, if you installed a mod or enabled cheats to turn on keep inventory or similar things they will be disabled in that world permanently, unfortunately there's no way to fix this without
starting a new world altogether, if this is the case there isn't much that can be done sadly, you can check if achievements are disabled by opening your game settings while playing in your world, if they aren't disabled then try uninstalling and reinstalling
minecraft. It should keep your player data, I hope this helped!

You can disable crossplay and youll only face PC players if you have a PC player

The "Auto-Motion" feature you're talking about cannot be disabled globally on your TV, you have to disable on a per input basis. So, if you disabled it on the input for say, your Blu-ray player, you will have to disable it again on the input for your Xbox.

For the same reason there's no option to disable "kill streaks".

Crutches for players.