Did this. Solved the problem (slitely... cant watch videos without going to youtube.com/feed/subscriptions)
Code:
var l=location.href;
if(l.match("youtube.com/feed/subscriptions")){ return;}
if(l.match("youtube")){ l=l.replace("www.youtube.com","youtube.com/feed/subscriptions"); location.href=l;}
please help me :P