You'd be better off setting your sights on £5K per year...
I know this sounds rude, but to be brutally honest, you don't seem to have many discernable skills or qualifications, and you have not worked for 15 years, so you really can't demand high wages. You have to have a very niche skill, and/or some fairly substantial qualifications to make anywhere near the money you are asking for.
You could try ...
Etsy Seller: Creating and selling handmade jewellry, crafts.
Reselling/Flipping: Buying clothes from charity shops, and then selling them on Vinted/Depop, or sell some of your (used) items on eBay/Facebook Marketplace. (Maybe even buy some other stuff - as well as clothes - to try and resell at a bit of a mark-up.)
Data Entry: Inputting information into digital databases for companies
Surveys: Taking online surveys.
Neighbourood Services: Pet Sitting. Ironing. Cleaning.
Best of luck, but you're deluded if you think you are going to make £50K a year from a working-from-home side hustle! As I said, I would set your sights on £5K a year to begin with,