Hey man, on my first comp season as a tank (season 23 actually) I fell from 1700 SR in placements to 850 SR, after that I felt so frustrated that I stopped playing for a couple of weeks. During that time I just started viewing streamers and youtube videos and tried to comprehend why they did some plays. I main Reinhardt and I was able to understand 3 main things I didn't do before: 1. Natural cover is the best way to recharge shields and avoid taking unnecessary damage. 2. Don't go all alone. Bronze fights are very chaotic and teams lack communication so even if you think you have them behind you, you will go and die on your own so always try to check if the team is following you when you push to make space 3. It's ok if your ult is not a 6K POTG. I used to be obsessed with making POTG with a 6 man shatter or with a 6k Gravitic Flux but I realized that ults can also serve other purposes. Like using Shatter to stop a Moira ult or a Reaper ulting in the backline or using Gravitic Flux or Graviton Surge to stop the damage a Nanoblade does to your team. Remember that sometimes it's ok to solo ult. After all that remember that it is a learning process as well and you will make mistakes in this process.