Hi! Cassandra. Yes, I'm here to help.
You have to search first the missing pst file.
Open File Explorer.
In the search bar, type:
*.pst
Wait a bit, this might take a few minutes while Windows searches your entire drive.
You’re looking for files like:
Outlook.pst
archive.pst
personal.pst
Let me know if you're able to find it.
Best regards,
Kimberly