How to say I ran out of time?
For example I want to say :
In the exam, I ran out of time
or I lacked in time ?
-The exam was going well but I lacked of time.
my point is : I want to say the time was not enough for me to answer all the questions

Question

Answer

I ran out of time
This is the usual way to say it

Answer

You already have the correct answer: I ran out of time. Your sentences using 'lack' aren't right.

Another option would be to say 'you didn't have enough time' e.g. I didn't have (enough) time to answer all the questions.

Answer

I ran out of time.

Answer

You say, I ran out of time.

Answer

I didn't have time to answer all the questions.

This phrase should do it. The way you said it also sounds good enough.

لا تفوّت فرصة تعلّم لغة جديدة وأنت مرتاح في منزلك. تصفّح مجموعتنا المختارة من مدرّسي اللغات ذوي الخبرة وسجّل في درسك الأول الآن!