No module named ipykernel_launcher
Installing pip correctly is the answer https://opensource.com/article/19/5/python-3-default-mac#what-to-do install pip in the new directory, and from there- download jupyter-lab again.
jupyter-lab
What is the difference between Jupyter Notebook and JupyterLab?
Jupyter Notebook is a web-based interactive computational environment for creating Jupyter notebook documents. It supports several languages like Python (IPython), Julia, R etc. and is largely used for data analysis, data visualization and further interactive, exploratory computing. JupyterLab is the next-generation user interface including notebooks. It has a modular structure, where you can open several notebooks … Read more