What’s wrong with the old one, apart from the tray thingy? Does it still work? If so, why not just bodge it?
Fridges are nasty things to dispose of. And there are mountains of them, at landfill sites. To chuck a perfectly working fridge away, just because of a bit of damage to the tray, adds one more fridge to an ever-growing pile of trash, that we can’t seem to deal with adequately.
Sorry, I know this probbly is not helpful, but people throw away so much stuff, that actually works. It’s so wasteful.
If you are getting a new one, at least Freecycle or Gumtree yer old one. Plenty of needy people about, or someone could have it in their work, or something. Give it a new lease of life.