Oh sweetheart, I echo the others that half of the problem will be how exhausted you are. Sometimes in that state it can be hard choosing which cake to have in a cafe!
We moved when my dd had just turned one from London to the north west. I had a year of maternity leave in London, did nct, baby classes etc and had made loads of lovely local friends. We also lived in a really lovely flat that we were very emotionally attached to but just wasn’t suitable with kids. We knew moving was the right thing to do but I still felt very nervous about it.
When you have young children it’s such an easy way to meet people. Chat to people in the park, try various playgroups, chat to people at pickup from preschool etc and eventually you’ll find lots of new people in your area.
It sounds like the house and area are ideal for you. Don’t worry about the commute for now if you’re going to be off a while longer. Lots of people end io changing jobs anyway after having children.
Imagine your children playing in the garden - we didn’t have a garden in London and it was a really hot April after we moved here and I remember how amazing it was seeing my tiny dd pottering about naked in the garden digging and pouring water everywhere.
Sometimes it helps to also remind yourself it doesn’t have to be permanent. Yes it costs to move but if you don’t settle you can always sell and move on.
Hope you get a bit of rest x