HOW AM I SUPPOSED TO CLIMB IF EVERY GAME I HAVE AFK ?!

Work, work, work. If it means that much to you, a few years of the bad with the good shouldn't be too big a problem. If it doesn't mean enough to you to play for years until it all comes together and you end up in diamond, it's not worth stressing yourself over.

My advice is to change your outlook. Be like Dick Butkus. One of the greatest players in history, but his teams were all terrible. That didn't stop him from enjoying the game, and it didn't stop him from being regarded as one of the best. If you're having great games, you know you're great, and that's what counts. Some fancy loading screen flair isn't necessary to have pride in your work. You're a badass. Own that. Live it. Know it.

Keep playing and eventually it'll be opponent teams' turn to get afk's.

You dont have afk every game. In fact, in long run , opponent has more afkers.

If you don't afk yourself, your opponents have a slightly higher chance of having an afk.

If you are having more afks on your side, you don't have enough games to overcome bad luck. Or your confirmation bias makes you forget the free wins you get with enemy afks.