Matchmaking in low elo

I'll not complain at all for being in B2 after I won 8 of my 10 ranked this season, I play in LAN 2 and I'm Gold there so I thought it wasn't that bad, until today I lost 5 games in a row, not to mention I'm in B3 with 0 PL now. I'll not tell the usual speak about, trolls and afk cuz we al now no matter the elo trolls and aks are there, but I can't ignore the fact that whenever you have a bad game the next match the matchmaking system seems to punish you instead of being fair or sort of any help you get worse players than the last match and get worse and worse. I started with silver players and b1 today and ended with unranked and B5 in my team on the 5th match and in the enemy team there was a silver one with B2 and B1, that's not fair at all, I just can't get what's point of it?, is like making it worse for some players instead of helping you just go down. I can't carry people who don't want to focus on objectives and no matter how many times you explain them to not chase or get alone in the jungle with out vision they just go wild and do as they please. I don't expect any "pats" on my back I just want to understand the point of matchmakings with worse players or lower elo every time you loose a game.