What else could be wrong with my car?

My car refuses to start and I've replaced my fuel filter, spark plugs, spark plug wires, starter and a new battery. Everything is reconnected and still it wont start unless I give it a shot of starting fluid and then it'll turn over for just a second and then it cuts off. I can't keep wasting money buying part after part with no result any help would be greatly appreciated

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Is there any oil leaks??

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Hi

Can you hear the fuel pump turn on when you turn the ignition key on?

Does the engine actually turn over but not fire or does nothing happen?

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