Hi Ace and welcome to the BB site! I'm fairly new here myself but I did want to welcome you and let you know I've found this a safe, supportive place to be. I'm sure others will come on and help/support you soon. It takes a little while to get used to navigating around the site but once you get to know some people it's a real help. Everyone is supportive and kind.
I can relate to what you say, I was bullied at school, it continued for years into my working life too. I went nursing after school but was immediately picked out as an easy victim by a senior nurse and it got too much for me. I suspect bullies pick out anyone who shows signs of not being sure of themselves, which is what you sound like. People who are confident don't get bullied. Unfortunately those of us who are shy or introvert or in any way a bit "different" attract bullies (who are weak people or they wouldn't need to bully others to make themselves feel big).
So first of all remember you are a heaps better person than anyone who bullies you!
There are some good websites and Utube videos about being bullied so you might want to look around on the internet. Trying to act more confidently even when you don't feel that way can help. What about your good points - what positive things can you say about yourself?
I'm sorry about your father and your difficulties finding work, it's not easy these days I know. You sound like a nice person and you're clearly trying hard. Nobody is hopeless and unworthy so don't put yourself down like that. People on BB have had all sorts of problems so people here will be able to give you help, advice and support. Do look around the site a bit. Once you get to know a few people here it's a real help. Take care and go easy on yourself - you are clearly doing the best you can at the moment! Cheers and welcome again.