Jupiter Lab installation issue MacOS

I’m taking a Linear Algebra course w/Python and would like to follow along in Jupiter Lab. On a MacOS (zsh) I have Python3 (3.7.3), though Jupyter Notebook installed in the Python 2.7 directories. I installed Jupyter Notebook and it runs fine. I then installed jupyter lab (pip install jupyterlab). The comments look clean, no issues, though
I cannot find the “jupyter-lab” executable; i.e. “%jupyter lab” or “%jupyter-lab” does not work. As well, adding the /lab URL suffix in Notebook results in a 404.

jupyter --version:
jupyter core : 4.6.1
jupyter-notebook : 5.7.8
qtconsole : not installed
ipython : 5.8.0
ipykernel : 4.10.1
jupyter client : 5.3.4
jupyter lab : 0.33.12
nbconvert : 5.6.1
ipywidgets : not installed
nbformat : 5.0.3
traitlets : 4.3.3

It looks like it’s there, although an old version. My path is
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/Jude/Library/Python/2.7/bin. Can you tell me where I should look for an executable?..or an alternative approach to install the most recent version of Lab (not sure why pip installed such an old version)?
Help appreciated.

Finally arrived at the conclusion to use Anaconda. That resolved it. The slog was worth it though; I learned a lot about Linux tools.