Hello and welcome. I'm new here as well. I too began drinking alone in my home. I would never go out and drink in public. I suffer from anxiety and it's some kind of dysfunctional coping mechanism.
I must stop this and deal with things differently. Coming here and talking to other people who don't start shaming me has been a relief as I come from a family who has zero tolerance for "mistakes" of any kind.
I know we can be healthier and happier and find new ways of living