Hi,
The latest drivers for macOS 12 Monterey can be found here:
https://epson.com/Support/Printers/All-In-Ones/ET-Series/Epson-ET-3750/s/SPT_C11CG20201?review-filter=macOS+12.x
However, the Epson ET-3750 is also listed as a supported printer in About AirPrint - Apple Support (September 18, 2023). An AirPrint printer would be compatible with macOS, and can be used without extra drivers provided that the printer and the Mac are connected to the same network. AirPrint works with wireless (Wi-Fi) or wired (Ethernet) network connections, so you could choose to wire the ET-3750 to one of the LAN ports of a Wi-Fi router (instead of connecting the printer wirelessly).
Drivers from the printer manufacturer may or may not offer additional functionality.
If necessary, reset the Mac 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 works, you may want to try a full power-cycle procedure:
Power off the Wi-Fi router, the printer, the Macs, any iPads and iPhones, and all other computers/devices. Wait two to three minutes. Power on the router. Wait two to three minutes. Power on the printer. Wait a minute or two. Power on the Macs. Power on any iPads and iPhones. Finally, power on all other computers/devices.
As always, make sure that you have backup copies of all important files before testing anything.
