How to remove mission control program from my Macbook?

Good afternoon dear Apple,

I have a note from somewhere like below

Last login: Sat May 22 06:28:16 on ttys000

The default interactive shell is now zsh.

To update your account to use zsh, please run `chsh -s /bin/zsh`.

For more details, please visit https://support.apple.com/kb/HT208050.

Elizabeths-MacBook-Pro:~ elizabethlee$ zs

I have no idea what is this please help me. I am anxious to hear from you.

Thank you.

Why not remove mission control which I am not using at all.

We are learning OBS program to make video in the class and I can not follow a bit because of mission control constantly interrupt the program.

I am learning some programs and it is for the children. These days, everybody has to upgrade the school system.

I am serving poor children. Their parents cannot support them because due to the coronavirus losing jobs left and right, therefore, their parents want them to have jobs. However, elementary students are not working eligibility to get a job.

But their parents force them to have jobs. Our school system has to wake up at different times being that we are leaving in.

I am very frustrated to learn many programs. But there is some hope for the children. I feel like cry every night. I need help in order to help the children. If we do have a strong ability to help the children, those parents are not any more forcibly let the children have jobs. And they feel shame about what they trying to ruin their own children. I just wish the Apple system be friendly to what I am doing here. I will go back to the USA soon for help. For now, I am only trying to install Naver MYBOX but Apple did not let in the program. Please help me.... I am now in Cambodia but soon I will go back to the USA.

I am learning OBS program and Mac Pro has mission control. The mission control interruption to learn program. I want to remove mission control which I do not need. Please tell me what to do.