Advice Please

Im a 18 year old female, i have a partner and a 1 year old daughter.

I have 14 GCSE's all B's & C's (apart from maths which was a D and i am going to be resitting)

I dont have any other qualifications at the moment

I've never worked a paid job myself, but i have helped work for my mother (a elderly carer) and my brother (manager of a newsagent)

and helped do several things for them but never actually my own job.

I have no problem communicating with people and interacting, but my problem is I cant find a job that I can do that pays enough to be able to keep my living situation how it is (I need at LEAST 20k a year)

And jobs i do find wont hire me becaue i have no experience.

Please any advice is welcome, im just trying to support my daughter and finding it very hard, Im willing to do any job I can get