Effin matchmaking

Im currently in silver 3 and this damned matchmaking is absolutely killing me. I already left this game once, didnt play in like 3 months or something. I came back and i played my main roles and got one rank up, everything was fine... The game was too fun to be true, and i was right, as soon as the game started to be fun the matchmaking ruined everything! I started to get typical high iq players such as afkers, wood division, inters... and so on. The only way to win for me is if i play one of my 3 mains, and unfortunately they often get banned, taken or i just get bored of them. Whenever i try something new the game makes sure to punish me for it, if i dont play my main role/champion i lose. And sometimes not even having those factors help. I dont understand why do we ''normal'' players have to suffer because of bad matchmaking, trolls and afkers,how many times did i have 2 people afk in my promos and lost them... The developers keep adding so much stuff that we dont need before they add something that we actually need... I dont even know why do i keep coming back to this game... You have to grind hard out of low elos, and then grind hard in high elos, but during the hard process it would be nice to make it easier by helping us out, not punishing US for having afkers and boosted people, it makes no sense for me... U should be more like Epic Games, listen to your normal players, dont just focus on Esports and money please...