Plat 5 is harder to get out of than DIamond 5.
I have two different accounts, one in diamond 5, one in plat 5. This is my plat 5 account. Granted, I don't play champions I'm good at on this account, I mostly just mess around with weird builds, but my MMR is low enough that I play with high gold players on a regular basis and let me tell you it is very difficult to play with these players. They are impossible to cooperate with because they don't understand the game at all. There's no teamplay. Which means you are FORCED to hard carry and play in an extremely selfish way so you can solo carry. These players are also incredibly toxic... It's a breath of fresh air to hop onto my other account and play in D5 with players that are just in general much more enjoyable to be around.
I feel your pain.