I use my laptop to give online classes to students, and the students say that I am too noisy to hear my voice.

With the computer network, it is common that teachers can't hear students' voices in class. After students connect to the microphone, they may not hear each other's voice because of the network or another microphone. You can disconnect this classmate's wheat and then connect other classmates' wheat. Speaker problem, if it is a network card, I suggest you buy a professional speaker, which is generally not enough.