Since you didn't provide us with which exact Canon printer you have, here are some general troubleshooting steps you can try:
First off, let's ensure that your printer is correctly connected to your network. Some printers require you to go through their setup process where you choose the network and input the password. You can find this in the printer's manual or on Canon's website.
Once that's done, we'll add the printer on your MacBook. Open 'System Preferences' and then go 'Printers & Scanners'. Click the '+' button to add a new printer. Your Canon printer should appear in the list if it's correctly connected to the network. If you don't see it, try restarting both the printer and your MacBook, then repeat the process.
If you've done these steps and still no luck, we might need to update your printer's firmware or check if there are any updates for your MacBook. Canon usually has updates on their website, and for your MacBook, you can find updates in 'System Preferences' > 'Software Update'.
For more detailed information, you can check these out:
1. Apple's support guide on adding a printer
2. Canon's support page for updating printer firmware