In React you need to use previous state during incrementing loops because React doesn't apply state updates immediately due to performance, so if you're expecting to update state and then immediately see it, you should ask Santa for it instead.

previousState.js

function HookCounter() {
    const [count, setCount] = useState(initialCount)

	//why you need prevState
    const incrementFive = () => {
        for(let i=0; i <5; i++){
            setCount(prevCount => prevCount + 1)
        }
    }
return (
        <div>
 	     <button onClick = {() => setCount(prevCount => prevCount + 1)}>Increment</button>
	</div>
    ) 
}

export default HookCounter