Answers:
Yes. Far too oodles, fatefully.
YES MANY MANY MANY PEOPLE HAVE
I'm sure lots populace hold. The stress of isolation is probably overwhelming.
Yes, ancestors who hold frenzy disorder (usuall the effect of agoraphoba) own just about impossible to tell apart risk of suicide as depressed folks. As for social anxiety, I wouldn't doubt that that have also cause suicide.
I'm sure in attendance hold be suicides associated near these disorders. Agoraphobia and social anxiety are regularly accompany by a lesser depression. Sometimes the depression become severe and involves suicidal ideation and attempts.