Hello and welcome to Apple Support Communities, Willing_Pupil!
I understand that you've lost some sounds on your iPhone 6 ever since you paired your Apple Watch to it. I'd be happy to provide information to help you troubleshoot.
Keep in mind, when receiving messages or notifications on your iPhone while you're wearing your Apple Watch, the sounds or vibrations will happen there. However, for what you mentioned about keyboard clicks, try these steps: If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker
Let us know the results.
Enjoy your weekend!