Just go in with the intention that you will be making a new account as soon as you feel like you've improved enough but the ELO system isn't accurately reflecting that. ELO is not flawless but it's pretty accurate for the most part, however that number is always temporary. If you feel like you hit a slump or are stuck in the wrong bracket, just make a new account. If you end up in the same ELO, you should analyze your games and note your mistakes, with much less focus on what your opponent setup but more so what you think you were planning.