Living in Crystal Palace will be a far happier experience than living in Thornton Heath.
Crystal Palace is lovely. It's the sort of place where - once lockdown is over - you'll step out of your door and feel as though you're the lead character in a modern romance novel. It's the sort of place where you can visit cafes, wander through new areas, while away hours pleasantly - and be haunted by the feeling that a meet-cute, an adventure, a wonderful new friendship is just waiting round the corner, or hovering in front of view, like the views of the city, shimmering in the summer.
Thornton Heath is basically about getting through the days, weeks, months. Making your home as much of a shelter from the outside world as you can.
Thornton Heath isn't yet at that stage where there are lovely cafes in which to linger, dwell, and weave dreams that float you through the days. It's far more 'dash from the railway station, get in, put the kettle on.'
You know, lockdown is having it's effect on prices. It might be worth looking at more places out of your price range and offering what you can. You never know - you might find someone who really wants to sell and will accept your offer.