i was playing with this dude ColesGameYT and he was hacking. he was flying and you couldnt hit him or get close to him without getting hit by it seemed like invisible people.
Going to lock as some support has been provided :)If it was on Java you can report him here: https://reports.cubecraft.net/report
If it was on Bedrock you can report him here:https://www.cubecraft.net/forums/report-a-bedrock-player-or-bug.88/
Keep in mind that you require video evidence to report them!