We (not get) her a present before we (go) to her party.------> hadn't got / went It's OK, but I think "didn't get" would work better here.
He (get upset) after he (read) the news. ------> got upset/ had read OK.
They were given help and advice before they made / had made the decision. I would use "made".
They had been /were given help and advice before they made the decision. Either works.
Student or Learner