If you are using it on your home network, you could still use network level adblocking with something like adguard or pihole. That won't work if you are hybrid or fully in the office, but I share your pain. Windows is hell from the first login all the way through to the "these apps are preventing the computer from shitting down" screen.

As for watching YouTube, an alternative frontend like invideous may help. Alternatively, you might try duck duck go. I think they relay the video through their own server.