A 27" LG 1920x1080 LCD with a 3" vertical gouge in one side and a wrinkly backlight diffuser sheet. To the left, a 22" LCD of some sort, and further left, the 15" LCD of the ten+ year old Toshiba laptop that's running the show.
But I'm lazy and mostly just use a 17" FHD laptop to Rustdesk into the Toshiba from the lounge.
I don't have any clear answers for you. Good that you have your son.
Do you have any hobbies that might have an associated club or volunteer organisation? Cars, radio, walks etc. Or perhaps your son does. Just something that will get you out of the house and among others.
Without looking for a partner, you will still find friends, and this can increase your chance of finding someone special, or them finding you. But you need to be ok with yourself before you can have the best relationships.