You cannot physically change the governor or unlock hidden frequency states without root. However, you can trick the system into keeping all cores active at their highest available "user-space" frequency without rooting. That is what the top apps in this niche do.
A utility overrides these conservative settings. It forces the processor to: download max all cpu core no root top
and look for "Force 4x MSAA" or "Disable HW overlays" to push GPU/CPU harder in games. ⚠️ Important Risks Overheating You cannot physically change the governor or unlock