Samsung Galaxy A53 doesn't show fingerprint on lock screen when no app is running

I have a Samsung Galaxy A53 and I did a fingerprint on it. When there is no application opened and it enters the lock screen, I don't see the option to put my finger to open it, and I have to write down the PIN code that I chose. But if I'm opening a certain application, it doesn't matter which one, WhatsApp or something, and the device goes to the lock screen through the button on the side, or if a minute passes, the fingerprint icon appears, and if I put my finger on it, it opens. I searched in the settings and Google and didn't find anything about it.