In case someone else has the same question, because I did and found this could have been answered differently. In Explorer, click on the three dots, select "Options", select the "View" tab, scroll to the bottom and select "Show This PC" and click okay.
I came across this when my mapped network drives weren't showing because they relate to "This PC". So, this is how to display mapped network drives as well as local drives.
The previous comment was by AI and it didn't answer the question. Maybe because AI has spent decades actually sitting at a Windows desktop and trying to figure out all the "new and better" 😁.