upload large files (1-5 GB) to aws s3 bucket using nodejs

I am trying to upload large files to s3 bucket It uploads files.
But It also uploads all chunks and at last it uploads the big file.

try {
    if (!req.file) {
      return next(new ErrorHandler('Files not found', 400, res)); // Remove 'res' from the ErrorHandler constructor
    }
    const userId = req.user._id;
    const bucketName = process.env.BUCKET_NAME;
    const objectKey = `${Date.now().toString()}-${req.file.originalname}`;
    const stream = req.file.buffer;
    const chunkSize = 5 * 1024 * 1024;
    const totalChunks = Math.ceil(stream.length / chunkSize);
    let uploadedBytes = 0;
    const mergedChunks = [];

    for (let i = 0; i < totalChunks; i++) {
      const start = i * chunkSize;
      const end = Math.min(start + chunkSize, stream.length);
      const chunk = stream.slice(start, end);

      const chunkKey = `${objectKey}-chunk-${i}`;
      const progressCallback = (bytesUploaded) => {
        uploadedBytes += bytesUploaded;
        const percentage = (uploadedBytes / stream.length) * 100;
        console.log(`Upload progress: ${percentage.toFixed(2)}%`);
      };
      await uploadStreamToS3(chunk, bucketName, chunkKey, progressCallback);
      mergedChunks.push(chunkKey);
    }

    // Merge chunks and upload the merged file
    const mergedBuffer = await mergeChunksFromS3(mergedChunks, bucketName);
    const mergedKey = `${objectKey}-merged`;
    await uploadBufferToS3(mergedBuffer, bucketName, mergedKey);

    const liveUrl = `https://${bucketName}.s3.amazonaws.com/${mergedKey}`;

    // Create newFile and respond
    const newFile = {
      userId: userId,
      liveUrl: liveUrl
    };
    return res
      .status(200)
      .json({ message: 'File uploaded successfully', newFile });
  } catch (error) {
    console.log('error -->>', error);
    next(error);
  }

I want to upload the single large file and not chunks.
And upload time is also not too much.