I lost my password to my notes

Hello~ The only thing you can do is remember the password. Click on below and review…

Lock or unlock notes on your iPhone or iPad - Apple Support*

*Apple doesn't have access to locked notes and can’t help you access them if you forget your notes password. If you forget your notes password, resetting the password doesn’t give you access to previously locked notes. If you reset then create a new notes password, that only allows you to lock other notes.

~Katana-San~

This isn’t the answer you want to hear, but there is no workaround unless you optionally selected the ability to unlock notes w/ your passcode.

If there’s any “good news” … it’s that there is no limit or lockout on failed attempts.