Thank you for your answer.
I removed all coda references as well as python references and downloaded the anaconda package.
Now, when I want to use conda to install coda (conda install -c conda-forge coda), it cannot solve the environment… It told me it was looking for conflicts, which took several hours and then said “Found conflicts! Looking for incompatible packages.” Then bascially listed all the conflicts, which are so numerous it looks like the packages are all incompatible, and that is it ! I still don’t have coda.