Starting out wholesaling can be rough when you're hoping to do it full time without a job. I read a blog of someone that quit their job and struggled to get her wholesaling business off the ground. It is not glamorous or easy; it takes a lot of hard work. You need a job so you have money to get the necessitates such as a phone, and you'll need some money for marketing expenses.
As for no one buying your deals... Did you build your buyers list before you started putting properties under contract? Did you follow up with your potential buyers and ask why they weren't interested in the properties you were offering? There could be many reasons why your buyers weren't interested.
Like the others have said before. Re-group and go after it. It takes a lot of hard work! You're not going to start cashing those assignment contracts overnight. Good luck!
*** I apologize for any of this comes off as hostile. I just have the habit of calling it as a see it.