Put in new starter van still won't start why?

I have a 2003 dodge grand caravan the
other day I was driving felt a vibration when
I was pushing on the gas paddle then a few
minutes later I hered a clank noise I stopped
at a gas station because I needed gas I shut
the car off put the gas in when to leave and
the car wouldent start tryed to jump it that
dident work batter was testing bad got a
new battery and still nothing then I was told
it was the starter got the starter had it put in
and now the van still won't start it turns over
but it's not enough and after 2 or three time
of trying to start it the batter dies I don't
understand