How can I search for my previous meeting notes?

All previous meeting notes are inside the 1-on-1 meeting page.

To access previous meeting notes, open the upcoming 1-on-1 of the attendee.

Upon scrolling down, you will see all the previous 1-on-1 meetings you had with the attendee.
This is where you will find all the meeting notes (shared as well as private) of all the previous 1-on-1 meetings you have had with the attendee.