Typically, people go to the store to buy treats for their pets, or use products from the owner's table.
There is a more practical alternative to these options. Some things can be prepared in the kitchen with your own hands.
Chicken Treats
Raw meat should not be fed to animals - beware of parasites.

Boil the chicken without spices and salt, cut the meat into medium-sized cubes, place on a board and freeze, then put in a bag - this way the pieces will not stick together.
It is unlikely that the cat will be against such a treat.
Fish Treats
Fish fillet can be boiled and mixed with oatmeal.
You can make cubes or balls from the resulting minced meat, and then dry them in the oven.
This is another great example of tasty and healthy food for your pet.
Meat treats
You can use any boiled meat, which needs to be passed through a meat grinder and add a little broth.
Place the pate into ice cube trays, freeze and treat your cat as needed.