Why is my variable not Global ?

    let movieList
    let currentMovie = 0

    getMovies()
    displayCurrentMovie()

    async function getMovies() {
        movieList = await fetchMovieData()
        console.log(movieList) // THIS WORKS
    }

    function displayCurrentMovie() {
        console.log(movieList) // THIS DOES NOT WORK
    }

    // Get the 20 most popular movies from TMDB
    async function fetchMovieData() {
        const API_URL = 'https://api.themoviedb.org/3/movie/popular'
        const API_KEY = '3fd2be6f0c70a2a598f084ddfb75487c'

        const response = await fetch(
            `${API_URL}?api_key=${API_KEY}&language=en-GB`
        )
        const results = await response.json()
            .then((data) => {
                movieList = data.results
            })
        return movieList
    }