OP, it is good to hear you have made the decision to look for a more sociable job. But I would also spend as much energy on ensuring you have proper social interaction every day.
Could you give yourself the equivalent of two commute times - use one to go for a walk, pick up a coffee or join a pre-work hours gym class - live and local to you. Every evening sign off work with a definitive action - again maybe go for a walk with a friend, or get your workout clothes and go to a class or for a swim or to the gym. A few times a week, make sure you have evenings or weekend plans where you chat with people - a book club, a supper club, WI, church group, am dram, choir, a ramblers club, creative writing or craft group, community gardening, political campaigning, friends over for lunch etc. I'd choose at least two or three of those to ensure enough socialising to counteract the isolation of living and working alone.
I don;t agree with PP that this advice is patronising - I've wfh for decades, all alone and it keeps me sane. In the absence of colleagues we need other opportunities for what a therapist told me was 'accidental learning'. E.g. you go for a walk, bump into a neighbour, they mention wanting a cat, you tell them your neighbour's cat just had kittens. They remember you like a certain band and ask if you'd seen they are playing locally. This sort of exchange is so necessary and if you don't have office space, it needs to happen in cafes, on walks, at the gym. I know from experience, I have to make it happen.