Looking to re-home a goldfish

Edit: Dog has found a new life! Thank you u/rammITT for providing an amazing home for Dog! He was kind enough to post videos of his pond below.

I have a goldfish who is not living it’s best life. My partner and I won them at a county fair 8 years ago and all of their mates have since passed on. They’ve been living in a 55 gallon tank, but would ideally find them a nice backyard pond to live out the rest of their days. Their name is Dog, they are a simple feeder fish, gender unknown, and while they’ve brought us a lot of joy these past 8 years I would like them to have a better home than we’ve been supplying them and I doubt my landlord would appreciate me digging a pond. I would accept a loving home with a tank, but keeping goldfish in tanks is actually very difficult (contrary to popular belief). Dog would be free to someone who can love and care for them, along with any of the tank supplies wanted (although I’ve already promised the tank and filter to a friend)

Moral of the story, don’t play the ping pong ball toss at fairs to win fish unless you really know what you’re doing in caring for fish. Hopefully giving fish as prizes will be outlawed one day and I regret giving my money to such a practice (our intentions were pure, save some sad fish).