Alternatives

If you can afford it, I would recommend getting Vulcan. It's a paid anticheat, but is by far the best anticheat for Minecraft Java servers.

You can buy and download Vulcan at its SpigotMC page, https://www.spigotmc.org/resources/vulcan-anti-cheat-advanced-cheat-detection-1-8-1-21-8.83626/