Xperia 10 III loudspeaker too loud

New user here.
I like to use loudspeaker during calls and keep my phone on the table when at home. But after installing SF, speaker is so loud that it almost distorts at lowest setting. I did use search and found an old post about setting the “sink-volume”. Is it possible to adjust only the loudspeaker, and not the sound level of the system as a whole?

$ pactl --set-sink-volume sink.primary 80%


Edit: I also get complaints that the microphone picks up too much background noise.