Is possible to make that Intellij auto format my code while I'm writing it (without using any shortcut) ?
I have seen this question was done 3 years ago (here) and the answer was that it will be implemented in the future and I'm looking for this feature but I can't find it.
No, it is not possible for now.
From your question i was wondering if this is possible or not but at the end after searching i found no way to do this. It just shows shortcuts to format code and nothing else.