As another commenter suggested, you should probably use Linux Mint for that purpose, since Mint is far easier to use, plus Tails resets itself upon shutdown so you'd need an external drive for permanent storage.
If you absolutely must stay on Windows, there's a project called Atlas OS that tries to strip a Windows installation of its telemetry and bloat, however there are privacy concerns with that, like up until a little while ago it actually disabled Windows Defender by default
My writing instructor always tells us to use the grammar checking in Word and there's the occasional formatting or compatibility issue. Nothing that I haven't been able to get through but it has resulted in a couple marks every here and there