It looks like the pilot missed the landing point by a huge distance ( this is confirmed) and then panicked. Either slammed the brakes too hard or tried to increase power to gain altitude to overshoot the entire runway. Not sure.

Only the black box will reveal what happened in the cockpit. The air traffic controller states there was no distress calls.

About ILS and landing I think it just guides you in based on all the data available. In the end it is the pilot who lands based on what he receives on ILS.

Only a person well versed on this subject can inform us.