its not the starter battery or alternator on 1991 Toyota Corolla

when i went outside this morning my car wont start so i cleaned off my battery terminals and it started right up so then when i get to my uncle house i leave it and try to start up it up and it wouldnt start so i push it to the gas station i put some gas in it and it still wouldnt start idk what is . could it be the fuel carbinator,fuel filter what can it be

2 answers 1 comment
Also when I drive the car it won't start when I cut off the engine.
What do I do?
Could be many things, you'll need to determine what isn't working when it won't start. First of all, is the engine spinning when you try to start it?