How to detect lua cheats?

Hi,I have questions about how to detect Lua cheats in gmod. The external lock command is not in the bill

You could always get an anti-cheat. These are pretty much the best way to detect hackers and for what

There are few anticheats that are free.
Quake Anticheat - https://github.com/notr1ch/q2pro-ac
ContionMig - https://github.com/ContionMig/ContionMig-AntiCheat
ModernAnticheat - https://github.com/moderndx/Modern-Anti-Cheat