Engine cranks but Car does not start ( not a flood)

Hi everyone, i drove my 2004 mazda rx8 to class like any normal day but when i came to crank it afterward it wouldn't start. after taking off the fuel pump relay and fuel pump fuses off i started cranking the car while having my foot all the way on the gas and it didn't work. i changed the spark plugs (the old once were nearly dead) and i already have LS1 coils on (had them on for like 2-3 months now) new spark plugs wires too and replaced the starter not too long ago too with a duralast starter. i also tried taking the spark plugs out and the fuel pump relay, fuel pump and the circuit fuses and cranked the car for 8-9 seconds while waiting for 30 seconds in between to see if any oil/gas will come out of the spark plugs holes but nothing came out. also the spark plugs were not dirty when i took them out again after a couple of attempts to "deflood". so that's why i came to the conclusion that its not flooded. i can also hear the fuel pump kick in as soon as i turn the key to ON and my gas went from a quarter to an Empty while try to crank the car which means that the pump is ok ... right:D:?
Last note: my 8 was flooded before and i've deflooded it using one of the common procures and the sound of the car when cranking it kept getting better every time i keep trying, but this time it did not change at all, it will just keep cranking normally without showing any signs of starting
Any suggestion on what to do and what the source of the problem is ?
Thanks you guys in advance !:wavey:

Engine cranks but Car does not start ( not a flood)