Help Me Avoid Prison: A family Needs His Uncle brother etc

Where do I start? I got myself into some trouble a month and a half ago. I was being a follower and made a very idiotic, dumb decision which could lead me to prison. I’ve never been in trouble a day in my life. The owner of a store and I talked and made an agreement that I would just pay him back by the end of the year. I’m still short of the money after my so-called friends left me high and dry. It’s a large amount of money for someone who works a job making $12 an hour. I have a nephew that’s like my son, 2 sisters, a mother, and etc. that I’m not trying to leave behind. I’m genuinely terrified of going to prison and I need some help. I have learned my lesson 100%. Someone told me to make a GoFundMe, so here I am. Anything would be a blessing. If you want to know more, reach out to me. Please, please help me out. I’m also my moms only son and scared to tell her that I would might have to leave her