Focus, focus, focus.
Season 16 I climbed from 600 to 1340, Season 17 I climbed from there to 2100. My peak in Season 17 is the highest I’ve ever been. I was stuck in Bronze for a number of seasons. I was using hardware that limited my ability to aim and acquire targets. Fixing that enabled my focus on playing a single hero to be more fruitful.
A few things to think about:
Are you playing too many heroes? You can’t be good at everything, try one tricking a self sustain hero such as Mei, Roadhog, Moira, Soldier 76, etc.
Do you have any hardware or settings that are a major impediment? Go look up videos about mouse sensitivity… Check to make sure your monitor doesn’t have a huge amount of input lag… Is your ping dramatically inconsistent or horribly high? These things won’t prevent you from climbing, but it can make it unreasonably hard.
Record your games / use the replay feature. If you want someone online to help you identify some problems to focus on, you’ll need to record them. Use the replay feature to watch what the enemy did each time you got killed. Review your position for every time you died, and figure out ways you can make yourself safer or more deadly to the enemy team. The best games to learn from are close losses.
Never allow yourself to blame teammates. Always accept responsibility for your SR. It’s under your control, you CAN get out of bronze.
Play more games. Doing placements and then only playing 2-3 more games in a season is not going to change ANYTHING about your rank. You really need to get in 50-100 games in a season to make any significant improvements in your skill and rankings.
Don’t expect to win every game. If you’re in the SR you belong, then you would expect very close to a 50% win rate. If you’re better than your rank, you might win 55%, 60%, maybe even 70% of your games, but you’ll never win them all. Don’t get discouraged about losses. Close losses are the best for learning.
Just because someone is a higher rank than you doesn’t make them a good coach. Take advice with a grain of salt, and get information from multiple sources. Jayne on twitch and youtube is an amazing coach, and he gives a great deal of good information in his videos. Sometimes his advice doesn’t feel very applicable to Bronze, so don’t worry if it feels like you can’t do what he says to do. Especially if it is trusting teammates related. Get to Gold, then worry about how teammates should expect each of the other roles to behave. You’ll still be disappointed if you want things to be like the pros, but you can start looking for good synergies as you get higher.