One way is to examine what material they are made of. I guess that all the thick basement walls consist of masonry concrete hollow blocks, which you can consider load-bearing. Thinner walls of, for example, half-brick (12 cm + plaster on both sides) or light concrete are certainly not load-bearing. The type of floor structure between the basement and the ground floor is also important for the assessment. If it consists of reinforced concrete, which can be suspected in this case, you can exclude all thinner variants. The walls between the garage and the pantry are probably not load-bearing.
However, the walls against the garage should remain as a fire compartment boundary.