Was ist der Unterschied zwischen I gave you und I had given you ?Du kannst auch einfach Beispielsätze geben.

This question dives deep into English tenses.
I'll explain it in terms of a situation-
I gave him the pencil.
The next day, however, he told me that I hadn't given him anything.
The story is told in the past tense, which means that everything being told is already over. However, the events are still in the order in which they happened. In the first sentence, we are telling about the point in time when I gave him the pencil, but in the second sentence, we are talking about the next day, and while talking about something that happened even before that passed point in time, we use the past perfect tense.