I was unemployed for a long time until I started working casually for an agency and got myself enough shifts to manage.
Worked in call centres, hotels, bars, homeless hostels, nursing homes and anything else I could manage to get, applying to MANY jobs.
"Graduate jobs" are a bit pointless, a lot of them are contracts, unpaid training, and they don't live up to the promise they get, and everyone applies for them.
Find something that is different but works with your degree, and do whatever work you can to get some money, or volunteer for a charity doing paperwork and get experience and transferable skills.