'activate' is not a conda command. Keeps popping up. What should I do?

Hello! Thank you so much for continuing to respond!

I am trying to install anaconda as it is on this site, but I am getting the following error: “https://ubuntu-mate.community/t/how-to-install-anaconda-python/17844

root@raspberrypi:/home/pi# cd ~/Downloads
bash: cd: /root/Downloads: No such file or directory
root@raspberrypi:/home/pi# bash Miniconda-latest-Linux-armv71.sh
bash: Miniconda-latest-Linux-armv71.sh: No such file or directory
root@raspberrypi:/home/pi# cd ~/Downloads/
bash: cd: /root/Downloads/: No such file or directory

I don’t have to try several methods, what should I do?