Ok 2008 altima has had trouble starting and today it would not start at all

What is your question?

My 2008 nissan altima will not start today and I kept smelling gas, I just installed a new fuel pump and went thru the proper steps after installing the fuel pump and what not. Well my car will still not start. When trying to start it, the engine sounds like it is trying to start for a split second after about 7 or 8 cranks but then just keeps cranking. I can hear the fuel pump when I turn ignition on. Can someone please tell me what is going on here?