Optimizing your media library is one of the quickest ways to boost site speed...

https://post-wiki.win/index.php/My_WordPress_Media_Library_Is_Huge:_How_to_Bulk_Compress_and_Save_Your_Site_Speed

Optimizing your media library is one of the quickest ways to boost site speed and search visibility. Start by renaming files with descriptive, keyword-rich names and adding helpful alt text for accessibility