OK, lets try something. On your bottom taskbar you see a little magnifying glass right beside the Windows Start button. Click the little magnifying glass. Type This PC into the little search box. Then click This PC in the window that opens. On the left column you should see everything including your C drive and any drive you just added. My old Western Digital shows up as My Book when connected.
Next as to why your computer would see this as a Network Drive I haven't a clue but
you can look here for how to turn On / Off network sharing. That covers Windows 10 and 11.
Ron