Keep getting banned, *HELP*

[kiwifrenchfry]

Hey guys, i keep getting banned from quite a few servers for hacking, but I don't have a hacked client (That I know off), I was banned from hypixel for a month so I just assumed I was banned, but I was just perm banned from another server. What can I do? Any suggestions?

-forgot to add, when I logged in to find my hypixel ban, my username was changed

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