How to convert array in localstorage to JSON that can be used to render elements into div?

Question

first i wanna apologize if my question isn't super clear..

howeverm i feel like i am close to figuring it out. what i wanna do is basically create a movie app Without React where you can favorite movies by basically clicking on the icon, it takes the ID from the movieDB API and pushes it into an array in localstorage

<a><i class="bi bi-bookmark" onclick="favMenu(${item.id})"></i></a>

function favMenu(movie_ID) {
    //SETTER
    faveArr.push(movie_ID)
    console.log(movie_ID)
    localStorage.setItem("favemovies", JSON.stringify(faveArr));

}

however, i am not succeeding at retrieving the movie posters into another page..

function getFav() {
    const x = JSON.parse(localStorage.getItem("favemovies"));
    console.log(x);
    axios.get(`https://api.themoviedb.org/3/movie/${x}?api_key=${API_KEY}&language=en-US`)
        .then((response) => {
            document.getElementById("try").innerHTML = response.data.map(item =>
                `  <div class="movie-card" id="mv">
            <img src="${IMG_URL+item.poster_path}" alt="movie poster" class="movie-poster">
            <div class="movie-info d-flex">
                <button type="button" class="btn-look btn-danger" data-bs-toggle="modal" data-bs-target="#detailCard" onclick="movieDeets(${item.id})">
                    Details
                  </button>
                 <div class="text-white p-1 float-end">
                 <a><i class="bi bi-bookmark" onclick="watchMenu(${item.id})"></i></a>
                 <a><i class="bi bi-heart" onclick="favMenu(${item.id})"></i></a>
              </div>
            </div>
        </div>
        <div class="modal fade" id="detailCard" tabindex="-1" aria-labelledby="detailCard" aria-hidden="true">
      <div class="modal-dialog">
      </div>
      </div>`


            ).join('')

        })
}

i keep getting this error instead..

Uncaught (in promise) TypeError: response.data.map is not a function
    at main.js:173:70