Your intellect and powers of comprehension are amazing.
You say:
It talks about the Raid into Bihar and Bengal and about the Burning of Nalanda university and other universities
The exact quote is:
"Muhammad-i-Bakhtyar, by the force of his intrepidity, threw himself into the postern of the gateway of the place, and they captured the fortress, and acquired great booty. The greater number of the inhabitants of that place were Brahmans, and the whole of those Brahmans had their heads shaven; and they were all slain. There were a great number of books there; and, when all these books came under the observation of the Musalmans, they summoned a number of Hindus that they might give them information respecting the import of those books; but the whole of the Hindus had been killed. On becoming acquainted [with the contents of those books], it was found that the whole of that fortress and city was a college, and in the Hindu tongue, they call a college(Bihar)"
As you can tell Nalanda is not taken by name, but something that you have added. You are not alone in making this falsification. An entire right wing ecosystem in India exists that added this falsification, you are simply a small part of it. This has been debunked by reputed historians and archaeologists.
Listen, if you are going to tell me that Bakhtyar Khilji destroyed other centers of learning, I will not disagree with you. But if you are going to insist that it was Nalanda, then that would not be acceptable as facts do not support it.
Now why you (and the entire Sanghi ecosystem) insists on interpreting the quote as Nalanda is obvious. To evoke emotions of past crime and hold an entire community as guilty. Since the actual Mahavira that was sacked was not famous enough to evoke any outrage, the narrative had to settle on Nalanda.
