Increase directory storage for Snap installation on CentOS 8

I have NextCloud installed in CentOS Stream 8 via snap. Default storage and setup parameters, meaning the location of storage is in /media. I have CentOS on a VM with 3.6TB of available space, and gparted sees the storage, but the nextcloud interface says I only have 60ish GB. How to I make the 3.6TB available to nextcloud?

I am new to Linux as a whole so this whole thing is full of new concepts for me. Thank you!