Shrink by kids

Your stomach rumbled, which meant that the people you had previously eaten were missing you and you had to eat more and more to grow. This city is big and there are a lot of buildings, high and low, in which a lot of people live, so many that they will not all fit in your stomach, but even less than half of these people are enough to fill your too hungry tummy. You are already 4, as we believe, and you are also taller than buildings and houses, so you can see where there are more people and where to gather, and also you remembered the school of your older brother, whom you ate earlier, but it doesn't matter anymore, he has already turned into soup in your stomach.

Where are you going to gather more people?