Can i save marriage?

The police cannot force you for divorce. In my opinion, it's not the authority of the police to decide/declare the validity of your marriage. As per the Hindu Marriage Act, if your marriage has been properly solemnized in accordance with conditions given u/s 5 (eg. broom has to be at least 21 years of age, bride 18 years of age,) and as per the rites/ceremonies of either party (including Saptapadi in most cases; section 7,) the marriage is valid. My advice would be to get in touch with a learned adovcate; acquaint him with your situation along with whatever proof you have of your marriage, so you can confirm your marriage's position.

Only if it's valid, you can file a suit in the local/family court for restitution of conjugal rights, where the court shall pass a decree compelling your wife to cohabit with you as is your matrimonial right. However, please note, you shall not be granted this remedy if, for instance, you have been guilty of cruelty to your wife, or are responsible for some conduct/omission which would likely make it impossible/tough for your wife to live with you.