Since the pandemic my father who I live with (in his 70s) has become increasingly stressed. We lost my mother the year before the pandemic and my father had planned to travel and even met a new gf. Since the pandemic he hasn't been able to see the girlfriend (and it's ended now) and can't travel. He is depressed and taken up smoking and drinking (nightly, he has always drank.)
He is in the vulnerable category. I feel he has just become suicidal and I don't know how to help him.