micro SD cards not recognized

[WytWun]

You're going to have to do some digging unfortunately to better understand exactly what is missing in the system config.

To try and gather more info about the card reader I'd go to the Lenovo website and try and identify the actual Windows card reader driver download package for your system - it is possible that it might actually be a Realtek device rather than the intel (the 100-14IBY appears to use a realtek card reader even though I think the intel chipset in that model includes SD card support...).

To learn more about your system start by opening a terminal window and running the command

Code:

inxi -F

before inserting a card into the reader and then again after inserting a card into the reader and comparing the output to see whether anything is different.

Some googling turned up this AskUbuntu article.  It is now quite old and likely not directly relevant, but many of the investigative suggestions on that page and the bug report linked in the second answer may be informative.  A look at a the kernel config on a Lite 5.2 system suggests that the necessary modules should have been built but they may not have been loaded on your system (perhaps the pinctrl module relevant to your system?).