My son is facing some issues like he is not...

We would like to inform you that your son is in adolescence, and its normal to has changes in his physical, emotional and behavioral aspects, and the desire to prove his masculinity and control, even if with unacceptable behaviors such as ignoring education, anger, nervousness and a loud voice, or even you may find him resorting to drinking cigarettes, criticizing everything and the desire to impose his opinion, even if his opinion is wrong, then he fights any directives or even instructions or criticism directed at him and feels that he is only right.
-Dealing with a teenager requires you to understand his needs, make him feel important, appreciate him, and show him love, attention and care, away from trying to impose an opinion on him or diminish him or his capabilities
-Treat him like a friend
 -Encourage him to empty his energy and share his worries and interests, as this will enhance his self-confidence and thus the ability to reorganize to what he was previously.
-Encourage him to organize his time and set a time for studying
-Try to accept him as he is and develop his abilities
-If you want to change a certain behavior in which you approach it and use the method of dialogue and discussion, that is the most successful way and method to modify a behavior or gain it a new behavior with a focus on setting examples for the sake of benefit, not in order to compare it to another person.
Regarding understanding, try to be patient with it and explain to him some things that are not clear, especially that he is still realizing and learning right from wrong.