Can I upgrade my iPhone 6 to iOS 14

Unfortunately, the iPhone 6 is not compatible with iOS 13 or higher. It can be updated to iOS 12.5.6, no further.

No, but you can update to iOS 12.5.6. That is the end of the update road for the iPhone 6.

Pappiekay wrote:

What can I do now

Well, if you want or need iOS 13 or higher, you will need a new device.

If you need to run higher iOS systems, you will need a different phone.....an iPhone 8 or higher.