Fullbean Tutorials - Connect to a Network Server Not Showing Up on Network

On my local network, I have a Ubuntu server that I call Thinkserver.
I also have a Synology server running on the same LAN.
The server running Synology shows up in the Windows 11 Workgroup folder. Thinkserver does not.

Until I solved that problem, I couldn't access Thinkserver.
The solution that I found was to open File Explorer and in the address bar type \\Thinkserver

When I pressed Enter, the address bar then showed

Having done so, I gained complete access to the server
I got the same results if I typed \\THINKSERVER

or \\10.0.0.61, the IP address of Thinkserver

Now, when I go to the Workgroup folder, Thinkserver appears

../