My iPhone 7 Plus is not working right

You don't appear to be answering my questions, so it will be difficult for me to help you. As such, I suggest that you make a Genius Bar appointment at your local Apple Store or Apple Authorized Service Provider to have them take a look and provide you with your options. Alternatively, you can contact Apple directly by using the "Contact Support" link in the upper righthand side of this forum's web page.

What have you tried, so far yourself, to resolve these problems, other than to just posting here so that we don't try offering potential solutions that have not already worked for you?

"I tried everything" unfortunately does not help. Could you please list what steps you have tried? For example, have you force restarted you phone, or reset any of the settings?