I recommend posting some replays to places willing to teach, like /r/nexusnewbies for example (and I think this sub sometimes has replay analysis stickies I don't remember).

You seem to be saying that other people are what's preventing you from climbing, but almost anyone who has climbed from a low skill level can tell you that it's almost certainly you that's impeding progress.

I don't want to sound rude, but I'm not really sure how to say this politely. The game won't place people into Bronze League by accident. You have to really show that your game knowledge is very low to be in Bronze league and maintain a Bronze level MMR. If you're unable to climb out of Bronze, then I absolutely guarantee you that you are what's preventing your ability to rank up.

Just go into the game with the mindset to improve and spot mistakes, and if you think you can't be objective enough to do that yourself then seek guidance through the various channels of help that are offered (again, /r/NexusNewbies is often a helpful place). If you play the game with the intent to improve, you'll see your rank climbing soon enough.