Handsome is as handsome does. This guy intended to kill innocent people. To do that he must have been evil!
It may be that he was brainwashed although at some stage he must have been capable of rational thought. However whilst those who brainwashed him or filled him with their perverted ideology, and I don't mean Islam but their crazy form of that religion,are even more evil, it does not in any way justify his behaviour. And I would prefer to use the phrase failed murderer rather than suicide bomber. I hope he rots in hell together with his minder