List Objects from AWS S3 bucket using ASP.NET

Question

I have an S3 bucket which has multiple folders. I want to list S3 objects from specific sub folders. For example my folder structure is: Folder1/Download, Folder1/Upload. Here, I want the objects only from Folder1/Download and not the upload. The function that I'm using is:

public void GetFTPFilesAWS(long ID)
        {
            AmazonS3Client amazonS3Client = new AmazonS3Client("", "", Amazon.Region);
            ListObjectsRequest request = new ListObjectsRequest
            {
                BucketName = "",
                //Prefix = "Download",
                //Delimiter = "/"
            };
            var practiceFolderName = "Practice_" + ID;
            string[] businessClaim = { "Folder1/Download/", "Folder2/Download/",};
            foreach (string s in businessClaim)
            {
                _ = practiceFolderName + s;
            }
            ListObjectsResponse response = amazonS3Client.ListObjects(request);


        }

I'm getting every object from my bucket using this and when I'm trying to use the prefix and delimiter it's not working.