Why isn't this "if" comparing until "n" reaches a greater value than estimated?

This if is not working as intended, it should "reset" the variable "n" to 0, when it reaches 3, but instead, it does that until 5.

I tried to print "n" without the if and it is giving the values I want.

0 1 2 3 4 5 6 8 9

But when comparing them, it is like I stated that 5 should be the "cap" to compare the actual value of "n".

    for (int i = 0; i < size //4 for the sake of the example; i++){

        if (n //value 0 == aux2 //4-1 = 3) {
            n = 0;
        }

        x = 0;
        y = i;


        for (int j = 0; j <= i; j++) {
            System.out.println(aux+" "+n);
            x++;
            y--;
            n++;
            aux++;

        }

        if (aux //also 0 at the beginning == aux2) {
            m++ //also 0 at the beginning;
            aux=0;
        }
    }

Excpected output: 0 1 2 3 0 1 2 3 0 1 Given output: 0 1 2 3 4 5 0 1 2 3