Is it possible to leave a customisable message on the Lock screen. E.G “If found please ring........”

Hi. Have just bought an Apple iPhone SE 2020 after having been Android previously. One really useful feature I’m looking for on my new phone is the ability of putting a personalised message on the Lock Screen, which I have found very useful in the passed. On a previous handset I’d left in a public park, someone contacted me because of the message I’d left on the lock screen....”Reward if found, pls ring....”.

There are still some honest people around and it worked for me. Thanks.