Though I’m familiar with .kbdx as KeePass database files, I’ll start by viewing file info and metadata:
We’ll likely be able to use KeePass2John to be able to convert the KeePass hash into a format that can be easily used by password cracking tools like John The Ripper.
Surely enough, we get a successful result pretty quickly using Rockyou as our wordlist.
Next I’ll just download KeePassXC and use the discovered password “goblue1” to open the vault and manually look through the contents for our flag.