Working MacBook or Laptop (Fulham)

Hello after recently being made homeless and now having to sofa surf my partner and I are looking for a working MacBook or laptop that we would use to generate sales of our digital art that we have created in the past but can no edit or access on our phones properly. At the moment we are just surviving day to day but the MacBook/ laptop would allow us to edit and print previous artwork we created and sell it to gain a bit of extra income to go towards finding a place to live permanently. We know this is a huge ask but to some people they upgrade and the older device isn’t used again. To us the MacBook / laptop would make such a difference to our lives at the moment and would change our future opportunity. If anyone can help we would be eternally grateful .