How do you get the clock display to aslo have seconds on my Samsung Galaxy Note S9 ?

[0909]

How do get the seconds with the clock on my Samsung Galaxy Note S9 

[BandOfBrothers]

Do you mean the clock in the status bar at the top of the phone ?

I don't think you can via the native settings in the phone @0909 

You could take a look at the Goodlock App found in the Playstore and within it the clock face option.

[AndrewL]

@0909: This isn't possible while the phone is unlocked, however if you go to Settings > Lock Screen > Clock Style > Choose Lock Screen or Always On Display, you can choose a classic clock face with a ticking second hand. Hope this helps.

[Phil-4069]

Is there a way to make the lock screen stay visible longer than 5 seconds? 

[AlexInAustralia]

I gave up trying to figure out which setting you can do this.

So instead, I just downloaded an app ... I used "Digital Clock Seconds" by "Light Dot Net".