The question asked by the poster is very amateurish. The thermostatic valve only produces one hot water, so it is impossible to adjust it yourself like the mixer!
Check it yourself: Steps:
1. Turn off the cold water switch and test the water pressure. Then turn off the hot water switch and test the water pressure.
2. Confirm that there is not much difference in water pressure between the two times.
3. Set to the lowest water outlet temperature. Feel the temperature.
4. Adjust to maximum outlet water temperature. Sensed Temperature Size
Summary: 1. 2. If the pressure is obviously different, the thermostatic valve will fail. There is no obvious temperature difference between 3 and 4. The thermostatic valve is damaged!