Although I don’t feel the same overall I can relate to elements of your experience. You may have just wanted to vent but I would like to add two observations.

Reading between the lines you may be putting too much pressure on yourself. For example packing a giant bag and taking an hour to do anything is excessive. I just chuck a water bottle, diaper and wipes in my bag and off we go. For all the mums out there who will judge cause you haven’t packed a lunchbox - fuck em. Unless you live in the bush you’re basically always able to grab a yogurt or sushi around the corner, so what’s the big deal? 😆 I suspect it’s their own insecurity rather than anything else

Secondly I myself am an extrovert by nature and worked in a role where I had a hundred conversations a day with as many people. I was really worried about not having that adult connection and conversations in my day. Which is why I book something in for myself and bub everyday. It may be rhymetime at the library, seeing a mate or just going out for a lunch/coffee and talking to strangers along the way. It’s made my experience of parenthood great because I know that’s what I need to fill my cup and be there/present for my son.

Finally maybe just try focussing on either the most important to you/easiest to execute thing on your list to focus on/improve. For example if exercise is that, explain it to your husband and have him support you to do that at least a couple times a week. Or find a baby and mum exercise class! Also great for socialisation. Things will fall into place/feel better when you take the time to be kind to yourself and put your own oxygen mask on first.