If you pull your hand away if a cat is biting or scratching it, they see this as encouragement just like stalking their prey. Try letting your hand go limp and firmly say no until the cat releases it grip. Then ignore the cat until normal behavior resumes. The cat may soon learn that it will receive no attention acting this way.

Also play each day with your cat in the way you want them to play. All cats need some type of outlet for play. Have interesting toys available. You may need to experiment to see which toys your cat prefers. Also is try to provide new toys, or at least rotate the availability of the ones you have.