Hello Oddzon,
Welcome to Microsoft Community.
I spent some time looking up the Pixma MG5650 on Canon's website, and I noticed that the printer is more than a decade old.
I speculated that the device might not support Windows 11, since I couldn't find a WIndows 11 driver on Canon's manufacturer website. I suggest that you check with Canon after-sales support to see if this device supports Windows 11. If yes, please ask them to provide you with corresponding drivers to download and install, and then confirm whether your printer device can work normally.
If they also tell you they don't have the right driver, then the device probably doesn't support Windows 11.
If anything is unclear, please do not hesitate to let me know.
Best regards,
Mitchell - | Microsoft community support expert from MSFT