Steve Jobs, when presenting a new range of Mac laptops once gushed something like... "and you should see what we've done with the screen.... amazing retina display... astounding resolution.... and it's glossy". Biggest turn-off right there at the end.
When I'm using it on my lap on a plane or coach, the last thing I want to see is my shirt and tie. Of course, Jobs' trademark St Croix turtleneck was black, so he probably never realised it.
https://www.amazon.com/gp/product/B08VNC4H8D
They have them for 14" Lenovo screens too:
https://www.amazon.com/Supershieldz-Lenovo-Chromebook-Protec...
(please don't do this)