soft low notes and loud higher notes

I realised some low notes were soft but the sound gets louder when i press on the higher notes. Is there any way to have all notes having the same volume?

Do the higher notes actually show they are louder in the meter or do they just “sound” louder? I ask this because, generally speaking, higher notes sound louder than lower notes. But the actual db level is very close.

Regards :sunglasses: