@HeaVad: If Always On Display is not available via Settings > Lock Screen, then I recommend heading to Settings > Advanced Features > Motions and Gestures > Life To Wake (On) > Double Tap To Turn on Screen (On). Also, to customise your lock screen notifications, please head to Settings > Apps > Select the relevant app > Notifications > Select a sub-category e.g General Notifications > Lock Screen.
NONE of my notifications will show for any apps what so ever and I've tried so many things to try and turn them back on. Nothing is working and everything is set to show notifications. Please help asap 🙏 😭 😢 😫