If i give up my parental rights and my sister and her husband want to adopt both my children or actually it's going into parental guardianship. Yet at

I do not have a job this is the second time I've lost them and then I just do not have the money to that loan support myself to let alone dish out money each month to keep my other two children in substantial compliance with money from the court do to a child support order. My sister and her husband want to adopt the children if they do so do I have to pay any type of child support because I can't afford it I'm bipolar and poverty ribbon and I can't afford it what do I do can I give up my rights? And then meant that I do do I have to pay anything at all if the kids are adopted by my sister and her