In my experience (in terms of seeing improvement):

1. Sometimes less is more. 2 games with good vibes is worth more than 5 games that are draining.
2. Treat your teammates the same as you would yourself. You as a bronze shouldn't worry about other bronze players nitpicking your plays. Just learn from those better and learn AT YOUR OWN PACE.
3. Better to hard focus on one specific thing instead of multiple. If your aim isn't the best, break it down and focus on one aspect (i.e peeking, crosshair placement, etc.)

Really the main thing is making sure you have some fun. Even if it's ranked, at the end of the day it's just a game, if you aren't having fun then there's no point playing. Having motivation will always be a big factor in improvement. Gl dude.