In the UK, there are tax breaks for renting out your spare room https://www.gov.uk/rent-room-in-your-home/the-rent-a-room-sc...

I've done this for much of my life. It has always worked out OK. Perhaps because I've always picked a nice middle class person as my lodger. Even the mentally ill homeless person I rented my spare room to was a nice middle class mentally ill homeless person and a friend of a friend, who recovered from his reactive depression and moved on as anticipated.

If there is a university nearby, there are probably graduate students looking for a cheap place to stay while they finish writing up their PhD thesis. Since graduate students are pretty much guaranteed to be respectable, you may need to ask for less than the market rent to grab one, but you don't mention being short of money. They will have their own concerns about you, but your dog will vouch for you.

You don't mention having a spare bedroom that you could rent out, I'm just guessing that "working remote" implies living somewhere with affordable housing, and that you have extra space. If you live in a one bedroom flat, maybe sell it or rent it out entirely, and take the other side of the deal, becoming a lodger yourself.

That is not an option for me. I'm trapped by my stuff: grand piano, Boxford CUD lathe, too many maths books. I cannot vouch for that option, but it works for my lodger, so it works for some people. (I'm over sixty and he is older than me.)

I fear that my comment is a little "off" and not quite appropriate, but in my defense, it is responsive to "I sometimes panic when it's been too long since I've seen another person."