What drive Jabarr the New Orleans truck attacker do it?

[target]

This guy seem to be a professional who doesn't fit the description of a terrorist but he went crazy that day and just ram a crowd killing 15 people as a result of it. Such a tragic attack for those innocent people on the street that day.

He is an IT pro and an Army Veteran who served in Afghanistan. This man can actually find better jobs than anyone else. He does looks like a man who could support a family and can even afford to buy a vacation house.

There is no way he can justify what he did but what made him do it?

https://www.reuters.com/world/us/suspect-deadly-new-orleans-truck-attack-served-us-army-2025-01-01/