Solo q is horrible

so how is it that im getting matched with trash over and over and over look at match history close notice how im crushing lane killing ppl over and over and my team is loosing lanes towers b4 10min yet im continually matched with ppl who are not on my level yet riot says that match making is based on mr yet these ppl dont have a champion pool have no clue how to team fight or do objectives but im continually matched with scrubs but im suppose to carry my team right how with no towers on map no dragons nothing so i play all roles i have a bunch with garbage laners i switch roles to c if maybe i can carry that lane i do but then the rest of my laners are falling again if we do win honestly its cause the other team has garbage players also only way yet riot continues to say matchmaking is fair based on MR? how please explain your MR system (that's broken) how can i team fight without a team? but yet u hold good players down do to letting any joe bobby and sue play ranked should be a better system ie if u only own this many champs for a role then u shouldn't q if u dont have champs to fit a role u shouldn't qq if u are dying over and over and loosing lane every time you shouldn't q if your cs is 50 at 10min of game u shouldn't q simple fix your broken game