Looking for advise on housing

Basically, I was living at university till I finished my degree last year. I had plans to for my masters but unfortunately my mum died so I posponed a year.
However my dad has found a new girlfriend and they have moved in together so we have to give the council their house back which will leave me stranded as i no longer live in  university accommodation. 
I claim ESA and high band PIP for when I had my stroke which cause epileptic seizures and lack of mobility so I am considered vulnerable according to documents i have read online. 
I now need to find a place to live so can anyone give me advise on the best course of action because I have no idea how council housing associations work or anything to do with housing. 
Thanks.