My 2011 Mercury Mercury Marina will not start it's real hard to start

What is your question?

My 2011 Mercury Mercury Marina is hard to crank the car every time I stick the key in the ignition to turn it it's real hard and sometimes it crank and sometimes it won't what could be the problem

What makes this problem better or worse?

It's gotten worse I can't crank it

How long has your 2011 Mercury Mariner had this problem?

Months