Once you actually move out, it’ll be easier to just live cheaply. Move out of the area, and find a cost-friendly apartment for one person. Even sleeping in your car and showering in gyms is an option. It’s not luxury, but it’s still viable.
The main part is being able to save money. Not necessarily making more. That means not dating, not having a pet, not going out to eat a lot, and not buying new video games for $70 all the time.