His Instagram tells a really sad story. He was an infrequent poster of perfectly ordinary content. No sign of any mental illness: pictures of his sisters wedding, some jokes, nothing concerning.
Then, some posts about the death of his mother and almost right after, his sharp decline in mental health becomes apparent.
The US has an almost completely and entirely intentionally broken system for legal immigration, which is one of the biggest reasons for its problems with “illegal” immigration.
He certainly feels like the couch-fucking type.