Compatibility issues with Printer Samsung M2070

its about the following printer:
https://support.hp.com/us-en/drivers/samsung-xpress-sl-m2070-laser-multifunction-printer-series/16450377
Generic Postfix driver does not work (prints "if you can read this, you are using the wrong driver for your printer"), a similar driver also does not work. (prints "SPL ERROR - Please use proper driver")

Tried to install drivers myself, but can't since /usr section is read-only
If i'm not mistaken, I need the rastertospl file in /usr/lip/cups/filter and the ppm file in the appropriate folder as well.
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