You may wonder why it’s important not to use products that are not supported. It’s because once technical support to a product or service ends, the vendor no longer provides security updates. This makes systems and devices more vulnerable to attack; and attack unpatched devices, the criminals most certainly will do.
Microsoft is strongly advising IE users to move to its newer browser Microsoft Edge. If you aren’t fond of that one, choose another one such as Chrome and Mozilla. These are not Microsoft products, but are certainly viable options to use for browsing along with a whole host of others to choose from. Pick the best one for your situation and devices. Whichever you choose, be sure to keep it updated with the latest patches at all times. And when the developers announce upgrades to any software products, or announce the end of the support cycle, be sure to take action to use products that are supported.
If you’re curious and want to know all about the Internet Explorer lifecycle, you can go to the Microsoft support website.