How to remove __MACOSX and .DS_Store from zip files in the whole directory mac

I need to create a script that searches and removes __MACOSX and .DS_Store from zip files in the whole system (MACOS). I have found this useful command that does the job but only if you are already in the directory of the file: for f in *.zip; do zip -d "$f" "__MACOSX*"; done I need to implement the search command and combine it with this one. Thanks in advance.