@The Guy 12 So, you're playing in an open world? OK, here are 4 suggestions:
1. If they are slow and easy, knock them off before they knock you off.
2. If they are fast pushers, make a hole under them as fast as you can before they can push you. This also works for 1.
3. If they are slow trolls, push them off with 1 or 2, then repair your work.
4. If they are fast trolls, abandon your work, even if they trap you by "cages", which are block cubes that trap someone. Rebuild it on a remote place.
Do it or your food for the guests.
@The Guy 12 If guests are annoying you by storm, here are 2 suggestions.
1. Don't do anything to them, even if they get angry. This is possible and simple.
2. Ask Chris to use an IP ban so guests, no matter what number but still the same computer, can be banned without coming back quickly(unless they use 2 computers)
You can do the first suggestion but not the second. That's all I know.