Always on display problem

[XCORP99]

I have a galaxy a15 and one ui 8 i'm sorry and I cannot find Always On Display option.I look for my display settings, my lock screen settings.I could not find it anywhere, please.Someone help 

[Mujibar]

Settings > Lock screen and AOD

[XCORP99]

Oh thanks

[Pete-ohki]

And in the future, you can also use the magnifying glass near the top right of the Settings to do a search.