Question

Can I use my Firestick on my computer?

Answer 1

Since the Amazon Fire Stick uses an HDMI plug that only outputs an HDMI signal and your computers HDMI plugs only output signals and not input signals you cannot use the Amazon Fire Stick on your computer.

You could plug the Amazon Fire Stick into your computer monitors HDMI input but you really don't need too since you can watch Amazon Programs through your web browser without the Fire Stick.

Answer 2

Why would you need to use firestick on your computer? It has no sense :D You can do everything in your browser, for example. If you need your firestick to be more like your computer, I recommend that you install Mouse Toggle - https://www.firestickhow.com/mouse-toggle-firestick.html It will allow you to use the remote as a mouse and it will help you a lot with navigating apps and other stuff. I think you will find it really helpful  as it gives you so many cool capabilities