Alec self harms in the form of “training” either while injured or to the specific point of injury.
After the forsaken attack, when he’s injured but feels he’s failed and trains until he almost starts bleeding again until Isabelle stops him.
After he killed Clary’s mother and he goes to the rooftop and shoots arrows until his fingers bleed.
Magnus literally acknowledges/calls him out on this when he says the bit about the physical pain outweighing the emotional.
So yes. Alec Lightwood self harms. Just because he’s not taking a razor to his arms doesn’t mean he’s not self harming, jfc.
Alec tried to kill himself at the rune party for Max. It doesn’t matter that they’re drugged with magic since literally the next morning he and Magnus talk about the fact that magic can’t create those feelings, only draw them out, meaning they’re in his head already. Magnus also equates it to his own depression and occasional attempts at suicide.
So yes, Alec is depressed and yes, he has suicidal ideations. Pretending he doesn’t is bullshit, to be honest. He functions, obviously, and it might not even be that bad most of the time. But it’s there.
Alec Lightwood canonically has mental illnesses.
