Qur'an:2:216 "Jihad (holy fighting in Allah's Cause) is ordained for you (Muslims), though you dislike it. But it is possible that you dislike a thing which is good for you, and like a thing which is bad for you. "Warfare is ordained for you."
Nothing to suggest "personal struggle" in any of it.
The Koran is nothing but a war manual from beginning to end. Just put it in order and read it. The only time abrogation occurs is when a later sura replaces an earlier one, which is why the Koran has to be read in order it was "handed down" (made up by Mohammad as he went along)There is nothing 'peacefull' and about a 'inner struggle' in any of it.
Second, I am not supporting the spurious story told by double-dealing Muslim apologists that most Muslims accept as authoritative the Hadith in which Mohammed after a defeat tells his followers that they are leaving the 'lesser jihad' of warfare against the infidel for the 'greater jihad' of personal purification.
At best a tiny minority of Muslims (mostly among the Sufi) regard that Hadith as genuine, though lots and lots of Wahhabis and even Salafists, all of whom reject its authenticity, will cite it to deceive non-Muslims.
I repeat, I am talking about the meaning of the word 'jihad' in Arabic, qua Arabic, not in Islamic discourse. In Arabic it means 'struggle', period. In Islamic discourse (with the exception of a minority among the Sufi) it means the particular struggle, warfare against the infidel.