Not necessarily, bad players can be outplayed.
You can call it bias or arrogance or whatever you want but if you don't want to believe that I'm far better than the people I play against then that's cool with me, it's not like your opinion changes the facts of the situation.
Happ, kul för dig.
Unless you're doing something wildly wrong like 3 AD carry team, winning the lane means winning the teamfight unless the game is close which, as I said, never happens in lowskill games.
I still fail to see how this is relevant. Unless you're awful, you will not be worse than the people you play with/against when you start out.