Using a downloader for Instagram is a relatively simple process, and typically involves the following steps:
Find the Instagram post you want to download. You can do this by browsing Instagram or by copying the link of the post.
Once you have the link, go to an Instagram downloader website.
Paste the Instagram post link into the downloader's input field.
Right Click (or Long Press on Mobile devices) the download button and Click "Save Link As" to download the content.
That's it! Once the download is complete, you should be able to access the downloaded content on your device.
Kindly make sure to use downloader tools responsibly and only download content that you have permission to access.