If you are of working age then initially I would seek a sick note from your GP then apply for Employment Support Allowance (ESA). You can apply for Personal independence payment (PIP) but this is a difficult benefit to get so i agree with Carole get help from Citizens advice (CAB).
I think because of Covid you have to apply online for ESA. Not sure about PIP but a phone call to Department of work and pensions (DWP) is a must as they send you the PIP forms, once you have asked for the forms there is a time limit for filling them in so take a look at Benefits and Work first to get an idea of how to fill the forms in.
Hope that makes sense, I’ve got my grandchildren so my heads battered
IF you are over 65 you should apply for Attendance Allowance.
It is not means tested and is tax free about £380 per month
You can get the form on line but it is large 72 pages.
You need a printer.
You must describe all your problems and all the support you need , I needed a chair lift, help putting on my socks and trousers, washing , help with cooking and home deliveries for shopping. I pay for physio twice a week , gardening and washing and ironing
I use a rollator in the house and a scooter outside
There is lots of advise to help you fill out the form from age uk
It will take you a day to complete the form get some help to type it
It is well worth it , I do not worry now about the cost of help
If you need further advice send me a private message