As it stands, it is written as one sentence -- a long run-on sentence. Try breaking it up into smaller parts that are correctly punctuated.
And please use "check" not "chk".
Student or Learner
Please chk these sentences,
I went for the interview yesterday when I was waiting to be interviewed, I saw 5 people came in for the interview as well, not altogether but one by one but they all had come gor the HR post.
So there is no grammatical mistake.
I mean apart from punctuation