Work advice

I had 3 part time jobs between 2016 and 2017. Lost them all, and was only in them for a few weeks. I have lived alone the past 14 years and worked as a self employed pet carer, dog Walker and gardener, but not generated much work and income. I have been suffering from depression and anxiety for over a year now, and found out earlier this year I have ASD, which explains my whole life work record, which is poor, never been able to hold down a job. I'm currently getting just over 60 quid a week UC to live on, coz I took the 300 advance, plus DWP overpaid my WTC and are taking it back out of my UC direct (which I think is evil).
I would like a part time job. My confidence and self-esteem are at zero now, they never were great, plus I have the depression, anxiety and ASD now.
Can you advice me for the best route as am not entitled to any more benefits and cant continue on their 60something a week.