I am stuck in Silver

Master one champion and you will master them all its how it works you need to learn game mechanics and have great map awareness learn how to rotate and work around you team and dont focus so much on rank you might be a hard stuck silver at it will take time to climb as these things don't happen overnight. It took me a year to get out of silver in Season 5 after that I went from gold to diamond in 3 months and have been diamond since.