If people are uncomfortable with you not drinking, that's very much on them
I quit cold turkey years ago. I was worried about the same things. But even my most macho & hard-drinking friends just accepted it without comment.
Don't surround yourself with people who make you uncomfortable. It's a lesson I realized as I got older: It has little to do with drinking; but if the people around you make you feel uncomfortable not drinking, then you're around the wrong people.
I wish I learnt this at age 0. This goes for online life as well.