Pinterest's search bar searches *Pinterest*. It searches the global database. It is terrible at searching *your* stuff. Try searching for 'that blue couch I liked last month.' Good luck.
When you add a note, you are creating metadata. You are indexing your own library. If you write 'blue velvet couch for den' in the note, those words become searchable keys.
Notestopin provides a dedicated search engine for your saves. It scans your notes, your tags, and the original pin descriptions. It's fast, fuzzy, and forgiving.
Stop scrolling. Start searching.