If I were you I would maybe get a partner or two to help on your journey even one more person helps alot because I know how rough that rank was I also wouldnt flex as hard as you probably do if you really want to climb stick to a couple characters good luck man!
Play badly and get to bronze, but then you will want to be in silver again.
depends on what role youre playing, if you shouldnt be in silver its easy to get out if you play a hero with strong carry potential eg roadhog, zarya, doomfist and widow, perhaps watch some others play to get a better idea on positioning too
don't know haven't played in a year or 2
Simply find a go to team who knows how to play on of the roles and work together.