Failed to open database file

I am at a loss for what is plaguing your machine. Here are some ideas:

  1. Run Tools > Reset Configuration

  2. Uninstall all versions of Audacity, and then Install Audacity 3.0.4 from Audacity ® | Downloads

It may be worthwhile perusing these forum posts that also reported a sqlite3 error 14:

Perhaps others will chime in…