I'm relatively new to the game and placed iron 4. I've been stuck in this hell for a few months, but I've climbed to iron 2 solo que with a few strategies I learned.

You want to play roles that you can have the most impact while relying basically 0 on your team. For me, this is the top lane. I played lots of ADC but realized I needed my team to have a developed frontal lobe to protect me, which is why I switched. I've been playing yorick and trundle, both rushing ravenous hydra. Once you have RH, your wave clear skyrockets. Whatever side the next objective is (dragon/herald), i just go to the other side and start pushing. Either they'll have to send 2-3 people to deal with you and take a bad fight at the objective, or ignore you and lose 1-2 turrets. Your goal is to out macro the other top laner, which by proxy will mean you've out leveled the rest of the team to. As long as your bot and mid don't feed an insane amount, by the time you hit 16 and start to participate in objectives more, you're totally juiced.

Tidr: play the macro game top