Check this out:
It should help you!
Or, if you don't want to SHELL in order to use it (I don't blame you, who needs middleware?), just go to https://www.instagram.com/
and click on the GET button. You will be redirected to the Windows Store (https://www.microsoft.com/en-us/store/p/instagram/9nblggh5l9xt).
There you can get it for your OS on your PC!