Identifying Small Flying Insects in My Kitchen

Hi everyone,

I’ve been dealing with an infestation of small insects in my kitchen in Zurich for over a week now, and I’m hoping someone here can help me identify them and figure out how to get rid of them.

Details:
Size: Around 2-4 mm.
Behavior: They can fly, but they seem to stay on the walls
What I’ve done so far: I’ve cleaned the kitchen thoroughly, thrown away some food, and inspected most of my pantry, but they keep coming back.
I’m not sure if these are rice weevils, pantry moths, or something else. Does anyone know what they could be? Also, what’s the best way to get rid of them and prevent them from returning?
I’ve already contacted my rental agency, but I’d appreciate any advice or tips from the community in the meantime.
Thanks in advance for your help!