Query between two tables is returning NULL value

Question

i am trying to make a query that will join some tables in my database using a Join. The tables are as follows::

Table 1 - RESULTADOS_SIGLAS

+--------------+-------------+-------+
| ID_RESULTADO |  RESULTADO  | SIGLA |
+--------------+-------------+-------+
|            1 | RESULTADO 1 | RES1  |
|            2 | RESULTADO 2 | RES2  |
|            3 | RESULTADO 3 | RES3  |
+--------------+-------------+-------+

Table 2 - FINAL RESULTS

+--------------+----------+----------+--------------+
| ID_RES_FINAL | ID_TURMA | ID_ALUNO | ID_RESULTADO |
+--------------+----------+----------+--------------+
|            1 |        1 |      123 |            2 |
|            2 |        2 |      321 |            3 |
|            3 |        3 |      444 |            2 |
+--------------+----------+----------+--------------+

What I need is to find the number of students who have a certain result and the information of that result (the result itself and its acronym), ex: Find all students in class 3 who have the result 1.

So, in my head, I should do the consultation as follows:

SELECT COUNT(RESULTADOS_FINAIS.ID_ALUNO) AS QUANTIDADE, RESULTADOS_SIGLAS.RESULTADO, RESULTADOS_SIGLAS.SIGLA
FROM RESULTADOS_SIGLAS 
INNER JOIN RESULTADOS_FINAIS on RESULTADOS_SIGLAS.ID_RESULTADO = RESULTADOS_FINAIS.ID_RESULTADO
WHERE RESULTADOS_FINAIS.ID_TURMA = 3
AND RESULTADOS_FINAIS.ID_RESULTADO = 1

What I wanted him to return to me in this hypothetical situation was:

+------------+-------------+-------+
| QUANTIDADE |  RESULTADO  | SIGLA |
+------------+-------------+-------+
|          0 | RESULTADO 1 | RES1  |
+------------+-------------+-------+

But he ended up returning me the following:

+------------+-----------+-------+
| QUANTIDADE | RESULTADO | SIGLA |
+------------+-----------+-------+
|          0 | NULL      | NULL  |
+------------+-----------+-------+

Could someone help me with this consultation? Thank you very much!