Guess what, I'm also 17.3...
years old and I am also from Petah Tikva... You have many spelling and grammer mistakes which to be fixed, you must sit down with a private tutor to teach you the material, top to bottom and all sides so you wont have any mistakes... I am sure this forum will not be sufficiant for you to do well in the bagrut. Sorry... It doesn't mean you can't stay here because of that... So welcome!