What Is the Best Folder Structure for Photos?
A structure that will still make sense in twenty years, and why it beats relying on an app.
Year, then month, is the structure that has lasted. 2019/08-August sorts correctly, reads clearly, and needs no software to interpret. Anything cleverer tends to be a system only you understand.
Avoid organising by event or person as the top level. You will forget which holiday was which, but you will always roughly know the year, and photo apps can search names and faces far better than folders can.
Put the date in the filename too. Then even a folder copied somewhere else stays sorted. Takeout JSON Metadata Fixer builds the folders and renames the files in one run, from the real capture dates.