Need a way to change realm codes or another way to stop hackers from ruining realms. (Rollbacks aren't always effective)

Recently a realm I have been playing on has been needing more and more rollbacks as hackers keep joining and nuking the server (Using something called "NBTs"). These nukes include Mass amounts of withers, unremovable carved pumpkins on your head, constant teleports, inventory clears, massive chat spams doing hundreds of messages per minutes normally saying things like "Get nuked" "(racial slurs I will not dive into)" "(hackers discord link)" and of course many insults. this keeps happening because they have whole discord servers filled with these 12 year-olds who share the realm code with each other and nuke it at least once a day now. Sure, rollbacks work but when the owner is asleep or when it happens multiple times a day making us all lose 30 minutes of progress it just isnt effective. If you could make there be a way to change the realm code, or some sort of anti cheat, or something, anything at all to stop or at least slow them down I think realms everywhere would greatly appreciate it. At this current point its getting severely unmotivating to play knowing it will all be for nothing. On a slightly different note, apologies in advance for any mistakes I made when making this report, I know I probably did but I didn't completely understand where to post this and how, so if this is wrong if you could forward this to the right place or let me know where to post this that would be great.