Does this game purposely make you lose or something??

Im currently new and was finding the game fun at the start and winning matches learning new champs and doing well, then all of a sudden im now on a 6 game losing streak because there is always at least a lvl 161 or higher inting and feeding all game, and i dont understand someone so high level plays like a new player. Im sorry to say if this rubbish continues then im done, i wanted to get to 30 go into ranked after thinking i was going well but well i seem to know the game better already than some of these so called clan members and lvl 159s etc, Can someone help because i want to climb ranked and quite frankly dont wanna even start.
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