When jupyterlab is installed use jupyter --paths to see where the configuration, data and runtime is stored. After removing the corresponding files and directories you will be able to perform a clean install without any traces of the old extensions.
Remember to use it in the right environment.
I'm trying to reinstall Jupyter-Lab with conda completely. I mean, when I run uninstall jupyterlab and install it again, the system already comes with configuration I had previously, such as extensions installed. Therefore, there is something that is still present after the uninstall.
Hence, how do I completely remove jupyter-lab and install it again from scratch?
Uninstall Jupyter-Lab with conda completely