Samsung laser M2020W doesn't work with Sonoma 14.6

Only the M202x models Samsung Xpress M2022W and M2026W are listed in About AirPrint - Apple Support (en-us edition March 10, 2025).

Have you checked whether the macOS 13 Ventura Samsung Universal Print and Scan Driver V3.93.08 (found via the HP link provided by Rudegar) possibly could be used even under macOS 14 Sonoma?

As always, make sure that you have backup copies of all important files before testing anything.

If necessary, reset the printing system and re-add the printer.

Reset the printing system on your Mac to solve a problem – Apple Support (UK)

Add a printer to your printer list so you can use it on Mac – Apple Support (UK)

If nothing else helps, you may want to try an experiment involving a small and relatively inexpensive Raspberry Pi Linux-based print server. The idea is to make a non-AirPrint printer appear in an AirPrint-like way on a network, thus allowing printing from a modern Mac without an additional printer driver (or an iPhone/iPad without an additional app). For some details, see the posts by Techguyuk in Can’t print with iPadOS17 - Apple Community and Tesserax in Can I connect my laser printer to my netw… - Apple Community.

well they(HP bought samsungs printer department) don't have a driver that support higher than macOS Ventura 13

Samsung Xpress SL-M2020 Laser Printer series Software and Driver Downloads | HP® Support

Apple are never involved with making drivers for other companies hardware

hp will not make any money apart from goodwill on using R&D and Q&A resources on supporting even their own developed printers much less on red headed stepsons they got in the deal of purchasing Samsungs printer department. If you buy a new printer making sure it support apples generic printing interface called AirPrint will make compatibility with newer operating systems easier

buying a new computer would only make sense if it was an older computer, or a computer with an operating system which hp supported

and you can check if the gluten print project support your printer model with their alt driver pack

https://gimp-print.sourceforge.io/p_Supported_Printers.php