Try to do your best and “invade” the still existing third spaces, no matter if that involves some extra money that otherwise you wouldn’t have spent. The best example for that are coffee shops, pick two or three of them and try to go there almost every day, by rotation, even for work (if during the week), or just for reading/browsing your phone. Be sure to bring your dog with you.

There are also parks, not sure if there are any of those in your general area, but make sure to make a routine out of walking your dog through them. Also make sure to sit on a bench for 5, 10, even 30 minutes, people-watching, even if it’s the middle of the day and work is waiting. Let it wait.