Keyframes not working

Hi,
i recently started learning Blender and i’m trying to move away from the expensive C4D software.

I’m adding keyframes for an object, but the object is not moving. I think i have accidentally switched something on or off.

Heres how it looks : https://www.youtube.com/watch?v=IvIMar5YIL0

thanx in advance!

When you select that “misbehaving” object I think I see a green outline around it. This can mean two things:
a) that object is part of a group
b) more likely: You accidentally turned that into a dynamics object.

Try deactivating dynamics: