How do I share the photos on my Nikon D850 through bluetooth?

Having trouble figuring this one out. Looked at the instruction manual and online but nothing to fix this.

I have tried to switch the Wi-Fi on but it says the mode isn't correct to enable it. Airplane mode is off.

Snapbridge keeps coming up online, but do I really need to use this to see my photos? Nikon's drive only gives you a certain amount of space before you have to pay.

Once you set up Snapbridge, the images will be transfered to your phone for you to upload to social media. Other than Snapbridge, you will need to transfer the images first to a computer, and then upload them to the web. No, you don't need to upload them to Nikon.

Instead of Nikon's cloud service, you can just as easily transfer the photos to your Dropbox account once the images are either on your phone (via snapbridge) or to any site of your choice once the images have been transfered to your computer.