Nhoj_1 :
but it was just 1 week when this mice has arrived, so its kinda hardly to believe that the mouse is defective,
Sure, Ill take your offer.
I'd RMA it in that case. No new mouse should produce double clicks when clicked just once.
Anyway, to debounce via software, you need to download and install AutoHotKey:
https://autohotkey.com/
And run this mouse debouncing script (copy and save it with notepad as "debouncer.ahk").
LButton::
If ( A_TimeSincePriorHotkey > 100 )
Send, {Lbutton Down}
return
Lbutton Up::Send, {Lbutton Up}
The number in the script (the "100") is the length of time (in milliseconds) needed to pick up the click bounce (i.e. if it detects two clicks within 100 ms it will issue just a single click) - you can modify it to suit your particular mouse button problem.