Trouble using "conda update conda" or "conda install wget"on my schools serve on the terminal shell

So I am an intern at my school and I am working on the schools server. I am trying to install miniconda 3 on the terminal shell (Mac) which I was able to do. However, I need to install some packages but I am unable to do so until I can use “conda update conda” or “conda install wget” but when I try to do that I get this error:

Here is the website that I am referencing:

From the message “Thank you for installing Miniconda3!” it sounds like miniconda was successfully installed. Anything helps! Just to clarifiy, I am using my schools server for this.