After playing in my smurf, I do understand why people are stuck in silver, or even gold.
People don't have any interest in learn something you tell them, nor learn from their mistakes. When I tried to give them a advice of how to build, when or not to go agressive, several "mia" in chat but they still stay at the enemy turret, they ALL tell me I suck, to shut up, or send me to hell. If I am snowballing, they try to hear me, but they forget it as soon as the game end, and continue to do the same mistakes. They are REALLY agressive to ANYONE on their team that is not doing well ; doesn't matter why they are not going well ( camp , bad matchups or simple lack of skill ). But, when someone adds me on my main account ( my main and my smurf are both in brazil, main is challenger, smurf silver 3 ) they are ALL nice to me , tell me how well I played in the game they spectated in the home page and stuff. But when I play on my smurf, and they don't know my true elo, they are just toxic and agressive with me.
If you are bronze, silver or gold, and nice to people and try to learn and stuff, you will climb. It is hard because of the amounts of toxicity, ragers and stuff, but you will.
If you are that type of guy who tells someone to go to hell because they are doing poorly, you deserve bronze, forever. Many times I have seen people trying not to help someone who needed help. Sometimes, it is better to not try help, because they are WAY behind. But early on is easy, specially at low elo, and people don't even try.