My struggle with money and mental and physical disabilities

Hello everyone my name is Simone Taylor I was diagnosed with autism and anxiety and learning difficulties as well as speech problems at a young age j never had any friend growing up because np one understand me. I attended a special needs school I like being in the sensory room the most with my ear defenders on I don't cope well with bright lights and smells and loud. In 2016 I started having trouble with walking bending and back pain doctors said I was making it up when me and mum tried to get help even now I have no idea what is wrong now I have to use a wheelchair but it get badly damaged so I can't leave the house with it. I wasn't a big fan of going out anyway I feel safer at home. People don't understand autism and how it affects everything I struggle to talk to anyone and not good with feelings. People tell me I laugh at the wrong time but I don't mean to. I was awarded DLA for life got letters about pip had to apply mum filled my forms got letter about assement I was too sick to atend so I got rejected for PIP. Thenmy other money was also cut so I don't have much. I guess I just wonderd if anyone else is struggling with anything. I may struggle to speak but I always good listner. 
Thank you