Why does the electric motor consume current?

This is an area of ​​personal reflection. Let's say we have a brush motor with magnets. If you spin it, it works like a generator. If voltage is applied, it works like a motor.

So, if you slow down such an engine during operation, its current consumption grows and everything is logical, because the law of conservation of energy applies. The more we brake, the more it consumes current, but why?

In fact, the anchor consists of coils, and the coil is a piece of wire, in other words, we create a short circuit by passing current through such a coil (roughly speaking).
So, if we fix the anchor, the current consumption will be monstrous, close to the short circuit. But what happens when the anchor rotates at idle? The fact is that during operation this engine works simultaneously and as a generator. That is, the anchor turns and at the same time reverse currents arise that compensate for the costs. And when we slow down the anchor, the costs are no longer fully compensated, and the current costs increase. I wonder, is it not?

Theoretically, any electric motor should work like this.