Something keeps draining my battery and making the car lose power..First wasn't getting any fire to starter.Replaced it..It crunk but died..Got a new battery and it died also...I'm thinking it's the alternator,That's the only thing I have not changed yet

Suspect insufficient alternator voltage output.. *Hands-on* testing by qualified personnel is required to confirm. Some people remove the alternator then take it an auto parts store for testing.. However the alternator should be tested while on the vehicle ! Recommend having local auto repair facility performed the required testing - many times the auto parts stores salespersons simply aren’t qualified to do so.