You need to communicate clearly to your supervisor that you NEED more supervision. You should not be several months in and still have no idea what your research is going to be. You need to start writing a project proposal/plan and whilst you write you will be forced to think clearly about what it is that you can do and might want to do. Just sitting around thinking and reading things is not going to define a concrete research topic for you. And find a second supervisor whom you can talk to every now and then. They should not do your day-to-day supervision but you should check in with them a couple of times a year to discuss progress, and you should feel free to discuss any issues you might have with your primary supervisor with them.

If you get benefits, I think there is a requirement to apply for jobs and talk to a person at the job centre every two weeks? If you are getting benefits you need to be available to do work immediately. If you are not, then you should not apply for benefits. I was unemployed for a few months after PhD but decided to not apply for benefits because I was writing up.