I can no longer find my phone app on my toolbar

Sounds like it may have gotten moved. If you cannot find it on any of the home pages, then go to the App Library, find the Phone app, then press and hold the icon and drag it onto the home screen. You can move it around from there.

No, the App Library is located after you last home screen. See this for additional help. Organize the Home Screen and App Library on your iPhone - Apple Support

You're welcome. Glad it was all fixed.