Question for Surface Pro 5th gen (2017) users about loudness

I have Surface Pro 5th gen. (2017). I begin my experience with DIY and try to adjust my G65 and other.

At which level from 0 to 100 you find loudness of example below conversational, not too loud, not to quiet?

(For me, YouTube volume is maxed, and the Surface speaker level is 20 out of 100).

I tried soundmeter app like Decibel X, but found it unreliable, even in my Samsung S23 Ultra.