Universal Credit supports you if you are on a low income or out of work. It includes a monthly payment to help with your living costs.
A Benefits Calculator is also available.
There is a simple and clear video on YouTube: https://www.youtube.com/watch?v=4WgJU8Y_bQg
One of rhe best websites to get information on Universal Credit is: https://www.understandinguniversalcredit.gov.uk/