Most cats do what they want and ignore anything you want, so that’s basically the life of a cat owner right there. However, if you have enough patience, you might actually be able to train your cat.
The first rule of training is no punishment. You want positive reinforcement to get your cat to obey your commands. Second, stock up with plenty of treats. You always want to reward your cat for desired behavior. Third, be prepared for a lot of training. Cats can come when you call them and even use a toilet instead of a litter box, but be patient. You might wind up training your cat after all.