Feeling low

I've been living with my partner but the relationship has broken down, and I'll have to move out but due to my autism this is very difficult and trying to find a private flat that will accept someone on housing benefit seems impossible.  Also, I may need a guarantor and I can't provide one, my parents are retired.  I'm on the register for housing back in my home town but unlikely to get anything this way.  I'm feeling low and alone, I'm 48 and tired from living with autism, and to be honest I feel suicidal - I don't have any family support either.  I've booked a train to my home town for tomorrow, and will book a hotel for a week but it doesn't look hopeful I'll be able to find anywhere in time so that will be it.  I don't know what else to do.