Unfair team matchmaking

last season i was plat 1 and it was easy to get diamond i was in promo already but i had to leave the game for 11 months when i get back to start my rank again i lost like 9 games of the 1st 10 games i said it is okay my mmr will match me with better players every game every fucking game i be like 15/2 - 20/3 - 25-5 trying to carry the team but they just flame and one leave cuz of flamers and cost me the game and i say it is okay next game my mmr will match me with better player now it is been a month and i am still in gold I i mean WTF where is that fucking match making system i am so fucking tired i am asking lol to check my match history and do some fair matchmaking i am not asking for a good team i am just asking for a team that don't troll that made me sick already i am stucked in gold -_-