How to add a bot that bans hacker?

There is no bot that does that.

The best options are:

1. Do not use cracked launcher and disable cracked on the server.

2. If you want to keep using cracked enabled, use a register/login plugin.

Quote from knightpro12

Hi I have another question how can I disable resource packs? People have been using X-ray so I need to disable it and how can I add the register/login plugin.

Thanks

1. If you have PaperMC you can configure the anti-xray in the paper.yml file.

2. This article might help you: Install plugins