Syag, there is a tension between two rival points of thought here, as is often the case. One says all is from Hashem, the other says that so and so has caused you harm. Both are true, at one and the same time. I know that sounds impossible.
As a point of reference see the Ramban Devarim ch. 20 who lays out the contradiction quite elegantly, and assigns one approach to the kohen and the other to the police.
The gist of this all is that Yes, your friend needs forgiveness, for he has harmed you, not Hashem…