speckxRecover Apple Keychain
Based on this description, it sounds like someone walking past your unattended desk and bent on disrupting your day but not stealing your data, could enter in a garbage password into the lock screen a few times and lock you out of your own laptop.
I guess the same also works for cloud accounts as well. I remember, back in the mid-2000s, trying to log into my hotmail account (never having failed to log in before) and getting a "locked out due to too many bad passwords". So someone, only knowing my user account name (which was the same as my email address), locked me out of my own account. The problem was, I couldn't remember what my recovery accounts were (I eventually figured it out).
Heck, once I cycled for half an hour with my iPhone in my pocket, and somehow the phone against my leg was in just the right position that it kept interpreting my leg movements as trying to enter a passcode.
Got home, pulled out my phone, and it had a message that it was locked for several hours due to so many failed passcode attempts. Incredibly annoying.
Still, only happened once in well over a decade of owning an iPhone.
I was mostly frustrated that there wasn't some alternate way of regaining access, like via my Mac or iPad logged in with the same Apple ID. Or that the failed passcode attempts didn't start eventually playing a loud alert sound or something on each failure.