Thank you for your question, my name is ***** ***** I look forward to assisting you.
Please note, a rating is only needed when we are finished.
As the first step, on your computer go to www.gmail.com
and sign into your account there.
Click on the left More, then Trash and check for the emails there. Then move them back to the inbox and they will then appear on the iPhone if they are still within the Trash folder.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please.