Well, there is no way to uninstall windows defenders in windows 10 and even if you find a way to uninstall it, it will be back again with windows updates. So, you should not go in the direction of uninstallation and search for anything else.
Yes, there are other things that you can do with windows to it at bay. You can disable windows defender in the windows 10 devices and the constant notifications will stop. But, I’d suggest you install third-party antivirus before disabling the windows defender on your device without any warrant.