1. That beats the purpose of being sorted in the house you belong to. The quiz has well thought questions, and if you answered honestly, the house you have gotten into is the right one
2. If you don't care about the quiz, and want to be in a certain house, it's pretty obvious which answers you need to pick to get in a certain house. There's also plenty of YouTube videos of people getting sorted, so you could just watch that.
3. If you're new on the server, you can get a free reset on the store, which is basically a free resort.