For me, I have been separated about 18 months, divorced officially just over 1 year, dating for approx. 3 months and I have those exact same feelings. I don't know how long it takes for them to go away, but at this point in my journey, my feelings are very similar to yours.
Cut yourself some slack. You are completely normal.
Dating [censored]. Building new relationships is awkward. Putting yourself out there for the arbitrary judgement of another person is really hard on self Esteem. And we all thought we had put this phase of our life behind us. But, here we are.
I wish I could buy you that glass of wine.
When I read your posts, what I don't see is a support system. Do you have a church? Do you have close family or girlfriends? I would focus on building those relationships and avoid men.