How To Upload Multiple Images In Angular

Question

I have a code for uploading a file to an api .. then api respond with a string url.. then I use that url inside a form group object.
now in my template I need to upload many images > then get each url as a parameter then send them with a json object to api . any one know how to do this please ?
here is my component.ts

let image = product['image'];
let prodImage = new FormData();
    prodImage.append('file', image);
let fileUrl = `**********************`;
      return this.http.post(fileUrl, prodImage, {
        headers: new HttpHeaders().set(
          'Authorization',
          `Bearer ${localStorage.getItem('user-jwt')}`)
      }).subscribe(
        (res: any) => {
          console.log(res.data.url)
          product.image_url = res.data.url;
          this.productsService.createProduct(product).subscribe(
            //sucess
            (response: any) => {}
    )}

there problem is when I need many images

let imageFr = let image = product['imageFr'];
let imageEn = let image = product['imageEn'];
let imageDe = let image = product['imageDe'];

let prodImageFr = new FormData();
prodImageFr.append('file', imageEn);

let prodImageEn = new FormData();
prodImageEn.append('file', imageEn);

let prodImageDe = new FormData();
prodImageDe.append('file', imageDe);

I don't wanna use many http post requests inside each others .. If there is any other clean solution.. Thanks