AFK Bot

So I made an afk bot and it works almost perfect. I randomly crash while playing, I am guessing this is do to it being detected. So I was wondering if anyone had an ideal of how to make it not detected.

Things I was wondering-
Can it be detected by the speed the mouse moves.
Can it be detected cause it was written in (x) language.

Thank you to anyone with helpful answers.

Try contacting a user that has made a successful AFK Bot.