I feel like I’m going to be a failure

I’m 17 and turning 18 in April I am almost finished my last semester of high school, not going to college because lack of money and interest in pursuing anything that I don’t have an interest in. I have recently left my job as a trainer at the YMCA. I left on my own circumstances. I originally took the job because the gym feels like the only thing I’m good at or ever be good at, I have found that I do like art, painting, drawing WHATEVER. But I know that art will not put me in the place that I want to be in life, I want to be successful, not rich and famous. I just want to be able to live without having to be so stressed about the future. I know that I’ll never know what’s coming next in my life. What I’ve seen recently coming to my senses with life is that money is the key to living. in my eyes anyway. I’m struggling to even find a part time job even though it won’t be my passion I just know that a 9-5 is not me, it’s not who I am and I don’t want to be doing something I don’t love or have any desire in. I have a little bit of family help with paying for things like car insurance etc. but I hate when I have to rely on other people to help me and my life. And right now I feel there’s no way out of this sort of pit I am in. If anyone even bothers to read my rambling please just help. I love the gym but I know just that won’t take me anywhere.