I dont have any direct statements; however, I have often found some early compatibility issues with laptop functionality and linux. I have had to jump through a few hoops to get my Asus Rog working, and I have an Acer Ryzen 4700 as well that also has function key issues. In many cases it comes down to kernel support for the hardware.
I did a quick search and found this: https:// forums.linuxmint. com/viewtopic.php?p=1870440 and that further links to a lenovo forum post: https:// forums.lenovo. com/t5/Other-Linux-Discussions/Linux-Fn-keys-not-working-Thinkpad-E14-AMD-Gen-2/m-p/5027791?page=1 (you’ll need to remove spaces from the links)
Take a look and see if that helps. Maybe others with a similar Lenovo can comment more here too.