If your phone was stolen unlocked from your hand, would the thief be able to get into emails/banking apps etc.?
After a friend had this happen and lost access to pretty much everything, including social media, I have my phone locked down very securely.
It shocks me that you are normally asked for a phone number for stuff like account security, what’s the point of them sending a code to your phone that a thief has and can see even if the phone is locked if you have pop up notifications enabled.
You should protect every single app with fingerprint or face id and set up your phone so nobody can get into your phone settings and change things or view your saved passwords. If you have screenshots of sensitive info, put them in a hidden album folder. Have all your passwords in a protected vault online.
Peoples’ whole lives are on their phones yet how many think of the consequences of losing them?
There are guides online for how to change your settings and other security measures.