Please Help Me In My Distressed Fighting With My Own Thoughts
God is not unjust. If your anger is misplaced, God will not punish him; if, suppose, he is not guilty, and God will not blame you, either, for your wrong perception, because you, anyway, are hurt, too. You need to understand what Kufr is. Kufr means not to accept a reality or knowingly disobeying God. As advised earlier, consult a psychologist or psychiatrist.
Thank you for your warm words. @Shahab001