Esp32 with SD card module

Hello all, I have an ESP32 with an SD card module. I want to read data from the SD card and save it in variables.
the form of the data in text file like this:
Reading ID, hum , Temperature

How I can save data variables x=0 y=69.50 z=20.10 ?

Thank you.

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TBH, you’d probably be better using LittleFS to save the data to NVRAM.