I did some research on the lock screen and AOD clock animations. In One UI 7 devices the AOD and lock screen app version is 8.9 and in A55 it is still on 8.8. I tried to install the 8.9 from the unknown source and it shows app not installed error.

Yes, exactly many features are missjng

Nhi bhai

Always on display mein b clock animations nhi hein na hi lock screen clock mein animations hein

Always on display is not updated. Clock animations in AOD is missing