There are 3 viable options.
- School
- Military
- Workforce
You are still living at home which can keep your expenses low and provide you some flexibility in that you don't have to take the first available job in order to eat.
School is a great option, but only if this is something YOU want. If you are not motivated to take advantage of it, it is just a waste of your time and money that you will be paying back for years.
If you truly don't know what you want to do with your life, the Military allows you to delay that choice for a few years while gaining income and and improving your future employment options.
This brings us to the workforce. It provides money now, but you are stuck starting at the bottom with limited education and experience. Pick an industry (not a single company) that interests you. Pester them until they hire you. Figure out what it is and find a way to offer them whatever it is they are looking for. Expect lots of unsuccessful attempts but keep trying and lean from each encounter, for it is not our successes from which we learn the most. Once you are in, figure out what your next step up is and work towards making that happen, repeat. Each job should not be considered permanent, but an opportunity to gain experience and references. Work hard, keep improving and try to always part on excellent terms. Salary tends to increase incrementally so don't expect to go from minimum to six figures without allot of little steps.
Taking a part time job outside your preferred industry is not a bad thing, it is always easier to get a job when you already have one. Just don't get stuck some place, keep working towards where you want to be.