Hi Tony, sorry you are feeling down. All this social distancing is temporary remember, and will be over in a while. It is keeping you and others safe, so that you can meet up with your friends and meet others at a later date, not too long ahead.
It's also important to remember that all of us who are neurodiverse have had challenges all through our lives to interpret communication and manage in a world where our situation and needs are different and are not well understood. Because of this, it's not surprising most of us feel we haven't always achieved as much as we might have.
None of us wanted lock downs, but it will be over in a while, and maybe you can use the time to further some of your interests, try a new hobby, watch some documentaries etc to while away the time until you are back out and about. Above all, try to distract yourself from regrets and self blame, it will make you feel sad, and it's unfair on yourself, because you try very hard to progress, from what I can see.
I hope you feel better soon, maybe put a good comedy film on and laugh away the blues.