How many files are recommended to be used in the Windows folder (NTFS)?

We have a project, which is a large archive of image files ... We are trying to split them into subfolders in the main archive folder. Each subfolder contains up to 2500 files.

For instance:

C:\Archive
C:\Archive\Animals\
C:\Archive\Animals\001 - 2500 files...
C:\Archive\Animals\002 - 2300 files..
C:\Archive\Politics\
C:\Archive\Politics\001 - 2000 files...
C:\Archive\Politics\002 - 2100 files...

Etc ... What would be the best way to store files on Windows? and why exactly, please ...?

• Subsequently, EXIF ​​metadata files are extracted and indexed by keywords that must be added to the Lucene index ... (this is done by the Windows service that lives on the server).