Regex Help -- Select Files in folders that do not contain a year/date

[deadpool2715]

I have many duplicates from phone backups and want to use the select custom to select all the files whose path does not contain a year, format YYYY. Examples would be
g:\photos\unprocessed\iPhone 7+\filename.jpg
g:\photos\unprocessed\iPhone 7+\2019-08-06\filename.jpg

I am looking to select all the duplicates with the filepath that doesn't have the 2019-08-06 in it. I tried using regex but have failed to get it to work, some regex examples I have tried.

\[^2][^0][^012][^0-9]-
^[^0-9]([0-9]{1,3}[^0-9]+)[^0-9]*