Hi!
I can suggest trying one of our email signup pop-up forms, they require no coding whatsoever.
Here are some examples for you:
You can add a phone field (or any other kind of field) to them as well:
Our app is called Email Popups and Coupon Pop Ups by Getsitecontrol, if you’re interested.
Feel free to DM me for any other information that you may need!
Giorgia from Getsitecontrol