Hey there LunaSkyflow,
We understand that you're trying to transfer photos wirelessly from your Nikon camera to your new MacBook Pro. We'll be happy to clarify.
The website for the camera model states that "This camera’s built-in Wi-Fi® capability can only be used with a compatible iPhone®, iPad®, and/or iPod touch® or smart devices running on the Android™ operating system."
Check out that page here: Nikon - D5300
This means that you would need to use the USB cable or SD card to transfer photos. If you have additional question about using the camera, we'd recommend reaching out to their support team using this link: Nikon Support
Let us know if we can assist further with your MacBook Pro.
We hope this helps. Cheers!