If you have problems with audio in Zoom sessions, or issues with Internet stability, you could use your phone and dial in number to join the session with separate audio.
Call a number listed in your meeting information and then enter the meeting id/passcode. You’ll be in the meeting twice - in two ways. Your computer will be connected and running the video element and your phone will join for the audio.
Note: once connected be sure you mute your computer mic or students will hear you twice. (might want to mute computer sound so you can hear via your phone as well)