Teaching online? You need a USB Mic
USB mics are going to be needed more and more for online lessons. If you are a music teacher, you need to get one. As USB microphone is a microphone that simply pugs directly into your computer using a USB connection. This is what USB drive looks like:

This is what USB cables looks like:

I use a USB Mic called a Snowball ICE. Here is a link:
As an Amazon Associate I earn from qualifying purchases.
I use this microphone for conference calls, for my online lessons and for my kids's online music lessons. They play violin and cello. You can find these microphones for $50 and for $50, you improve the audio quality drastically on a Zoom call. There are of course more expensive USB microphone options.
If you need help in thinking about which USB microphone to get, send a DM. I would be happy to help.