What’s your experience being a single mom with 2 kids?

I’m 24 years old, I have a 4 year old daughter who I have raised as a single mom since the day she was born. However, I started seeing a guy about 2 months ago and just found out that I’m pregnant. He doesn’t want the baby and is insisting I get an abortion.. but I don’t know if I can go through with it. If I choose to have this baby, it’s very apparent I’ll be on my own once again.. are there any single moms on here with 2+ kids that can share their experiences? Is it harder than having one child? How much extra did it take financially? How do you make time for yourself? Etc