Notifications disappear from lock screen when I unlock my phone. Any idea how to fix that?

Basically as the title says. I just installed my new phone and upgraded from Samsung. But I'm struggling with notifications. They both pop up and disappear from the lock screen which is very annoying

On my Samsung I was always used to just seeing what's going on quickly without unlocking my phone. With this new UI (Oxygen OS 15) it seems it's not possible to change that.

Does anyone know how to fix this?