Download and run the installer:
wget https://repo.anaconda.com/miniconda/Miniconda3-py39_4.12.0-Linux-x86_64.sh bash Miniconda3-py39_4.12.0-Linux-x86_64.sh
Enter "yes" at the end when it asks if you want to initialize conda.
Your terminal prompt should have changed to have "(base)" prepended, something like this:
(base) m2xxxx@ward-rweb-03:~$
If your prompt does not show "(base)", then you need to run the conda initializer. Run this:
miniconda3/bin/conda init