hidden mmr and long win/lose streaks ?

I just learned that the more games you win in a row the higher chance you get of being on a team of feeders. ( i dont fully understand this) So my problem is i win 3-4 in a row and feel pretty good. Then i get 2-3 games ina row where bot lane goes -10 and loses tower in 5 min. I was in silver 3 until i got banned for calling someone a shitt eating cocksuckerr. So ya its not your fault if you feel like the game is trying to fck you cuz it is. The players that seem to advance have to be pretty postive people in general, or maybe just really mellow. Kinda sucks too because the game is great at its core. I dont even mind losing a game because i lose lane or make a mistake. I can learn from that at do things differantly. You cant do anything differant when a player steals your lane and ints for 20 min. My main issue i think is after a game like this ^ even if i take a week off im still tilted until i win again.