Windows; Mac; Linux; Mobile; LastPass Universal Windows Installer. The Universal Windows installer installs browser extensions for Internet Explorer, Edge, Chrome, Firefox, and Opera. LastPass for Chrome. Features dependent on a binary component, such as sharing of login state with other browsers, will not function. Internet Explorer for Mac was Microsoft's free web browser designed to run on Mac computers. While you can still download Internet Explorer for Mac from this page, it is important to note that the product is no longer supported by Microsoft.
You can't.
MS stopped support in 2005 for Internet Explorer.
If you were running a virtual machine with Windows could you download Explorer for your Mac.
If you are looking for browsers for the Mac besides Safari, consider Firefox, Brave, Opera, or Sea Monkey.
Free Internet Explorer For Mac
I just searched and saw this article, it might be of help
Internet Explorer 10 For Mac
If you are trying to reach a particular website that calls for IE, go into Preferences in Safari, go to Develop menu, select User Agent and select Internet Explorer 11. See if the website that you are trying to reach handles that.