What a piece of crap is this algoritm?

Riot Base - Oh no, look. This player just had a win streak with 8 games. Now he must lose another 8. It just cant be.
Ok, now give him a win streak.

Win streak>Lose streak>Win streak>Lose streak No matter how u play. In win streak u will win even when u do a literall shit. In lose streak u will lose no matter how good u was playing. So much fun to play rankeds. How do u even dare to force our win ratios and frequency of streaks? I feel like it is not free game anymore.