I will level with you, I get no joy out of anything in life. The closest thing I can call joy is the feeling of being useful obtained while working. I don’t work because of the pay, I work because I want to feel needed by someone because my brain can’t connect the circuits that make me feel comfortable with myself (ie being confident, having passion for something etc).
It has been like this as far back as I can remember. My dad used to yell at me and ask when I would develop ambition in life and it never happened. Nothing I ever did or tried signaled “this is great!” In my head.
When it came time for university I spent 2 years undecided and had to take a fifth year all due to me never having passion in anything I studied. I eventually just chose a major and specialized and that worked out well for me as I chose a lucrative specialization, and that’s what I spent the energy people typically spend on their passions toward.