Bloated media libraries are the silent killer of site speed. To fix this, start...

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

Bloated media libraries are the silent killer of site speed. To fix this, start by renaming files with descriptive keywords instead of generic numbers. Always add helpful alt text for accessibility and search ranking