This is the 603rd most frequent Russian word.
факту
The Russian word "факту" is the dative case of "факт," meaning "fact."
Here, 'по факту' means 'in fact' or 'actually', used to emphasize the reality of the situation.
На самом деле, по факту она была права.
In reality, in fact, she was correct.
In this case, 'по факту' refers to 'at the time of' or 'upon' an event, focusing on immediacy.
Почему вы не сообщили эту информацию по факту ее возникновения?
Why didn’t you report this information at the time of its occurrence?
Here, 'по факту' is used to mean 'based on the fact of,' indicating reliance on concrete evidence or facts.