引用自 Diegol：

i got banned and idk why, i don't use any cheats or other programs. how can i apelate to solve this problem?? my stats are completely normal, please i don't know what happpened

It's a game ban. Cheating is not the only cause of game bans. There is an "info" button right on your profile next to the red ban notice. Use that, please. No, game bans cannot be appealed.

EDIT

Correction : Game bans for Valve games cannot be appealed.