I have a 2008 Ford Focus that won t start. It clicks when I turn the ignition but work crank. Got any advice?

Also the radio will flicker on and off if I try to turn it on. Car ran fine 2 days ago. Also just put in a new battery.

Read more: I have a 2008 Ford Focus that won t start. It clicks when I turn the ignition but work crank. Got any advice?