Cannot seem to configure audio for music lessons

[Ash2024]

I have been struggling to figure out why my guitar cannot be clearly heard on music lessons via Zoom. I have set the audio according the the suggestions of my teacher and also what zoom recommends and still my guitar sound is cut short. 
Advanced settings are as follows:

1) original sound for musicians checked 

2)high fidelity mode checked 

3) echo cancellation not checked

4) stereo audio checked 

if I check zoom background noise removal then original sounds for musicians becomes unchecked.

does anyone have any suggestions?