Why didn't I respond to eating protein powder for fitness? Now I don't feel dizzy and my muscles don't react much. Ask a professional friend for help, thank you.

It seems that you are not at the primary level. This is a pyramid. You should have encountered the present situation of "bottle mouth" You can increase your weight by adding a pyramid to the pyramid. At present, what you want to add is muscle dimension, not tree shape, so you need a lot of weight to rush.