I have the same problem and same feeling. Over the years the speaker has been getting weaker with the updates (same goes for the speakers of the iPads that we have at home), and now the headset volume is stupidly low as well. This ruins not only calls, but the whole brand experience. My iPhone is a business phone that will not be replaced just because Apple wants to force me with this regular sneaky downgrades. It seems like another strategy of programmed obsolescence. I honestly feel deceived and the last move of removing the chargers USB-c in the name of sustainability when most people has UBS-a is, in my opinion, extremely cynical.