Organizing my home videos

You need to use file names and structures that are valid in a TV Show Library:

A TV Show Library/
.......Home Videos/
...........Season 2015/
............Home Videos - S2015E01 - MVI_3098.mp4
........for instance... 'Home Videos' can be any name - the rest must be compliant

Also do this - you don’t need embedded metadata right now and any metadata that’s present may hinder the operation:

Then, create the structure and file name theme above - or one very close to it with Season Folders and File Names that are valid TV Show items - then drop it in a TV Show Library.

Then:
Fix Match
Search Options
Agent
Select Personal Media
Select the only item in the list - your ‘fake show’
Done

That tells Plex to stop trying to match that ‘show’ and you can hand edit it without issue.

The ‘Fake Show’ will behave like a regular TV Show…
can’t be any easier to access…