Welcome to Mamapedia!
It sounds like you have made some good first steps - you recognize that you did some things when you were young and foolish, and you recognize that your current boyfriends needs to be your ex-boyfriend. If it's possible that you are being abused or controlled by him (you have no friends, feel economically dependent, are isolated), then you need to make a plan to get out.
You don't have a phone but you obviously have access to a computer. So contact a help center. Two you can look at are:
the National Domestic Violence center http://www.thehotline.org
or
When George Smiled https://www.whengeorgiasmiled.org
If you think your computer use is being monitored, use the public library, or go to the police and get help finding a shelter. You can also go to an area church or synagogue and get help/referral from the pastor/priest/rabbi. There are many resources and caring people who will help you get to a safe place and not feel trapped.
Once you are safe, you can focus on getting a job and job skills. Many of these centers have wonderful and caring people who will help you in your community. Your state employment office will give free training for job skills and help place you.
Once you have a job, income, stability, and a roof over your head, you can start to work on getting custody of your daughter. She is not a baby anymore, so be realistic about what she needs. I don't know if you officially lost custody and cannot have visitation, or if your mother just stepped in and you are not seeing your child for logistical reasons (you're not close by, can't afford to get there, etc.). But you can get legal services to help you negotiate this. There will be a firm need for you to demonstrate your maturity and your economic status, so work on those first.
If you continue to talk about living in a car, or talk about your child being a baby, they will not think of you as having taken the necessary steps to grow up and be stable. I know you are dreaming about what life would be like, but fantasies will not help you get closer to your goal. You need to be very direct, very motivated, very focused. Your child doesn't know you, and it will be difficult to get back into her life. Many parents have done this, but they get there by showing they can take the steps, in order, and stay focused on the goal even if the goal is not obtainable right away. If someone appears to be wishing that all their troubles will just disappear, they are viewed more as being too immature. You can, and should, get counseling through any of the above resources, get some parenting classes so you can learn about 5 year olds and kids who have not lived with their biological parents for a while, and how to reintegrate to their lives.
You've made some good first steps. Don't let your desperation cloud your thinking. There is a way you can be on your own, but wishing won't make it so.
Good luck!