@Prez, it's nice to meet you.
Your sharing about your desire to know more about Android resonates with me closely because I use 2 step authorizations for my accounts here, LastPass which securely logs me in, and also for my email which must be accessed in order to obtain a one time 6 digit verification code before I am allowed to successfully frollic these forums freely.
Today, I'd reinstated Norton's free Applock security app on my phone. I'd not used this fine security app for many months following an update that required permissions. Applock requires a 4 digit passcode
I (for the life of me) did not remember
following my 1st try, and not on the 2nd attempt either.:X3:
Long story short, my third attempt happened to be the right one!
..although I was running out of options.
The moral of this story is simply this: "Don't get locked out." & "Even Android security is only as reliable as your own common sense (..& sometimes your memory)".
Know where your key codes are, and have a back up plan (notebooks work nicely) if you ever need a memory back up!
We'll find more to discuss about Android, and we're all very glad to have you with us here on MT!