Is bankruptcy the right answer for me? How much does it cost?

I recently separated from my partner and I am now a single Mom, with shared custody of our 3 children. Unfortunately, this change in my life required me to accrue more debt than I already had. In addition, I have spent the last 4+ years working part time in order to stay home with the kids. I was able to make monthly payments on time, but my overall debt was never reduced. Now that I am supporting myself and my children, I feel like I am in over my head with debt. I have close to $21k in personal loans and $12k in credit card debt. I also have over $55k in student loan debt, but I understand that may not be considered. I am currently renting and I am not behind on my rent. I own a car that is 14 years old and probably only worth $2k. That is my only asset. Will I lose my car? My credit score is only around 600 to begin with, so I do not think a lower score matters right now. I need help figuring out if bankruptcy is the right answer for me.