Yeah this game is really hard to solo, hell even duoing can be extremely difficult. Me and a friend ran peaches on a quad, he had our only gun, i had our only car until we bought an SUV, managed one weed run (we didn't know the dangers) and made out like BANDITS with like 90k to each of us. Honestly your best bet is to join a gang that'll take you, and run a big group of people doing a drug run or something. Hell if you see me on send me a message if you need some help starting out, and I'll abuse ya