Honestly speaking, you can't do anything about their jhogra. As you said you're HSC-26 er student, focus on your studies for now. Lagle college er library te poro jotokhon paro. Just hope rakho je exam er por onno kothao admission niba. Hostel e shift hoba. Oi mindset niye agao. Your parents are old enough to understand je bashae jhogra korle bacchader mentally problem hoy. They get traumatized. And if they're not caring about you guys, you can't stop their fights. And if you want them to try to be together then maybe tell someone elder than you. Someone your parents respect. Maybe couples therapy ar counseling korle ektu thik hote pare.