How to check curse and how to remove curse

The reason i asked this is because i pretty sure i was cursed , after thinking i know what the curse do , and after testing it , it happened . ( I don't know how i was cursed and who cursed me , i literally don't know ) . But i'm trying not to be an idiot that have too high imagination and try to find the way to check curse in islam way , but i did not find any such article . So i search how to remove curse in islam way at the internet , i find some , i tried , but it does not seemed to be worked because after testing , the curse , still exist . Al-Qur'an mentioned about curse , but do Al-Qur'an mention anything about checking and removing curse ? If yes , how ?