In terms of embodied energy, brick veneer (composite of materials with a layer of exterior brick) typically have the best life-cycle ecological performance, 20%-60% better, compared to curtain wall (glass+steel) and precast concrete panels, across many climates and regions. Engineered wood for buildings is probably the better option in the long run. There's a lot of movement recently, construction is a very slow and conservative industry though. Probably need for results to be validated. A lot of claims are by industry publications. But intuitively it feels right.
Floors are usually made of thinner concrete, although sometimes a design of concrete mesh is used to save weight with the gaps filled with Styrofoam or light bricks, and then a thin layer of concrete is poured on it to serve as the foundation to the floor tiles.
The concrete floors also serve an important goal of supporting and delivering horizontal forces in the building.
This means that there is no technical limit to the height of bricks buildings, although there might be practical reasons not to use them.
Below is an example of how it looks [0]
In the not so distant past bricks used to carry the load of the building, and indeed that has limitations to how high buildings can be,
[0] https://globalist.in/tk-cement-interlock-brick-kuttippuram/b...