Give it away. I think you are talking about pet cats. It is difficult for a pet cat to survive outside. They are like wild animals kept in cages. They are long gone. The ability to forage alone, and someone should want it, you can give it to someone or give it to a pet store.
Actually, I think your attitude towards raising pets is wrong. You didn’t think carefully before raising a pet, and now you don’t want to keep it. It’s really irresponsible, and you still want to release it.
This is not acting in a TV show. What about releasing the birds? Do you think you are the heroine of the White Lotus in some TV series? Is being released into the wild and then turning into a stray cat what you want to see? At least give it to a snack and find a reliable person to give it to. In fact, it’s best to be a relative or friend who knows everything about it. You can look for people in the same city online to see if there is anyone you want to adopt. If you really can’t find it, send it to a pet store. Or a pet rescue center, I think they are all feasible. They should make proper arrangements there and then help the cat find a serious and responsible owner.