It’s pretty simple, get a 2L bottle of soda. Create a funnel with the bottle and cut an opening for the chickens head on top (this is a real version)Tie the feat, invert the chicken and put head through cone. At this point the chicken should be pretty calm. Use a knife dispatch the bird by removing the head. Let the bird bleed for several minutes, then get a big pot and get water right before boiling temp. Drop the whole bird in it for about 45 seconds. At which point you’ll remove it and start plucking the feathers. I usually grab a stool and get a plastic contractor bag and defeatjer over it. (It’s a smelly and gross process) after the bird is featherless you’ll go to the backend of the bird and cut AROUND the tail and create a cavity almost to the base of the rib cage. Remove all guts including the neck and you’ll essentially have a store bought raw chicken. Process takes about 45 minutes if you do it all at once.

As for butchers/slaughter houses I don’t think there’s any in the area that would be willing to provide their services for only one bird. Dm me if you have any questions and as always open a guide online and when cleaning the bird there’s much better step by step guides on the Internet.