Autumn is a proven cheat client that can be used quite easily on absolutely any server. Just keep in mind that cheats are now really easy to use.
Incredible and multifunctional Wurst cheat for Minecraft 1.16.4, 1.16.3 and 1.15.2. Surely you have already heard about this hack more than once, since it is quite popular among cheaters. Wurst is a simple hack for Minecraft that works quite easily even on the top servers.