You want to do ‘Shift’ + ‘right click’ to access the browser menu. See my answer here to ‘How do I copy an image from the output in Jupyter Notebook 7+?’.
Have you tried installing rich. If you install it, it adds an option for better details, colors, and syntax highlighting to Jupyter. (If you use pip as your package manger run %pip install rich in a cell and then restart the kernel, and if you use Anaconda, try %conda install conda-forge::rich in a cell and then restart kernel.) Then run at the top of the notebook:
from rich.traceback import install
install()
There’s more customizing you can do, spelled out in a related answer here.
You can see it action without modifying your own machine yet by going here and pressing ‘launch binder’. Alternatively, just click here to start up a session. When the session starts make a new cell and run this:
from rich.traceback import install
install()
Then in the next cell make an error.
Another tip:
Try the different themes under ‘Settings’ and see if they help.
I wonder if you are seeing this? Occasionally, I see cells below the top part disappear If I add a new cell it usually makes everything come back. Where I linked, it suggests duplicating the view of the notebook by right clicking the tab with the name of the notebook and choosing ‘New View for Notebook’. I imagine then you can just close that new view after it comes.