guys im not infected. i never downloaded anything unknown. that client downloaded from the site itself
Huh? you mean Electrum Auto downloaded and installed itself? 
if so, then it definitely sounds like you got a scam version. Electrum has NEVER had an autodownload or update feature that I'm aware of... That sounds highly suspicious to me.
and noone know that i have btc so i believe its a bug or anyhthing like that
when i tried to increase fess for last transactions money gone.
No one needs to know if you have BTC or not... if you're running a scam version of the software, the hackers don't need to know who you are or where you live. They'll have your private keys.when i tried to increase fess for last transactions money gone.
Just because nothing happened for a while doesn't mean your wallet wasn't compromised. They may have been waiting for big deposit or for BTC value to increase etc.
I very much doubt that there there is a bug in the wallet so big that it autosends coins to some random address... that's a ridiculous claim. The more likely answer is either your wallet got compromised by something you did (claimed any fork coins lately? exported your private keys? typed something into a website?) or by a scam version of the wallet.
Have you confirmed the digital signature of the file you downloaded and installed?