Hello Dscarboro,
Welcome to Apple Support Communities. It looks like you have to make two attempts when trying to dial a number as the first time always fails. We understand the importance of getting this issue resolved, and we'd be happy to look into this with you.
What is the exact version of iOS 14 currently installed on your iPhone? Settings > General > About.
When you navigate to: Settings > General > Software Update do you see any available updates? If so, please back up your iPhone, then update as explained in the following links:
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
If your device is already up-to-date on software, please try the following steps:
If you can't make or receive calls on your iPhone
We hope this information is useful. Kind regards.