Hi,
Same as talked in the topic below, the settings you show can appear on the screen, but event at the lowest level, the speaker sound is too loud. This is not convenient when you are outside, and even a bit strong for the ears. The maximum sound at normal call (not loud speaker) is not enough to be eared on handsfree.
See this topic : Speaker and headphone volume too loud during Whatsapp video call - #21 by mcb