severe input lag when playing on a server with many people

I bought i controller(gen game x7) like 2 months ago i was so excited but when i played on a server i was angry cuz of input lag.

When i play a server or a minigame theres severe input lag on a server or minigame with 2 or more people.the only minigame that i can play is mlgrush,duels and the bridge.

On survival its not that severe but its still annoying.

I tried everything but the same result i tried uninstalling,using a 3rd party app for bluetooth and messing with the files but the same result.

hope this get fixed im not gonna play multiplayer for a while cuz of input lag