All faucets and 1 shower in house have great pressure. The two sinks in the master have less pressure and the shower has even less. What can we do to get more pressure from the master shower. I did buy a shower head for low pressure it does feel better but its very streamline. Any other suggestions

Most all shower heads are now low volume heads but a finer spray which makes them appear powerful. If you think it's the shower heads then try swapping them. It is more likely your cartridge valves have some minor debris inside and need to be cleaned/blown out. Do you know the brand