Can I try to make a deal with the police?

No.

 

No police officer can make a deal. They do not have the legal power to make you a deal or cut you a break.

 

ONLY a prosecutor can negotiate and make an enforceable promise of leniency in return for assistance.

 

Don't even think about negotiating deals with cops.

 

If a prosecutor is standing next to the cop, ignore the cop, talk to the prosecutor.