Hi!  Just seeing this now. I noticed you said you use Firefox in a message below. I use Firefox as well and I use this add on to get to the notifications https://addons.nvda-project.org/addons/mozillaScripts.en.html here is a excerpt from the link in which  it will help you • NVDA+Control+N Reads the last notification and it takes the system focus to it if it is possible.