[How do I make mobs fight each other?]

Hello, I am trying to make an arena on my server. But I came across an issue, using teams to make mobs aggro each other doesn't work. So how would I go about making mobs fight each other? I am able to use datapacks and plugins if needed.

Thanks!

[how to delete a server]

From what I know, you can't delete a server. What might work for you is resetting the server (in the danger zone) and then changing the server name.

[Can't Join My Server]

52 minutes ago, _Tarna_ said:

Try doing /whitelist off in console then join the server. Also this is on your server right?

I already did try  that, Still doesn't work. And yes it is my server. I am the only staff on it.

[Can't Join My Server]

I was just playing MineHut, Had to leave the server. Came back and now it says "You are not whitelisted on this server!" when I try to join, And I don't even have white list on!

So I went to the server command page on the MineHut editing thing and white listed myself, Then I tried again. Still didn't work! Please reply to this and help me!