There are 2 things working against you.
1. Your wife is 15 year older than you. There is nothing wrong with it. But since it's not a common practice, specially among people from your region, it makes immigration officials heavily suspicious of your marriage based immigration claims.
2. Your English is terrible. You might want to say something, but you are giving completely different meaning to immigration officials who are already suspicious of your marriage.
At this point, best course of action would be.
1. Hire a good immigration lawyer. And absolutely do not answer any further question without your attorney present. Tell the immigration officials your attorney's name. And that's it. Otherwise anything you will say, it will be used against you.
2. Register to join ESL (English as Second Language) classes. It is extremely important, otherwise you will keep using wrong words at wrong time and that will jeopardize your presence in United States.
Dishac got a reaction from Linos in September 2020 I-130 Filers Club