Am I wasting money by buying another tank?

Am I wasting money upgrading my tank?

So a month ago, I bought a 10 gallon tank. The tank got cycled and everything and I added 6 glofish tetras to it. A few days later, I notice the fish being used to certain spots in the aquariums which I think is normal. But now my tetras have claimed certain spots in the aquarium. the purple tetra has basically claimed a third of the aquarium and will change anyone out of the area. One orange tetra has claimed a corner. I’m scared that it’s not enough space for my fish and honestly it may create more problems. But a friend told me I am just wasting money since I just got the tank recently. What do I do?