YouTuber OmoIgbo has some fantastic advice on how to come out as an atheist.
Some of it is autobiographical — like saying she wishes she had come out to her parents sooner — but most of it is pretty universal. It’s excellent information for anyone who’s on the verge of making that leap but may have some concerns about the repercussions. (follow link for video)
My personal tips/preferences,
I won’t back down from saying so if asked. If they don’t like it that’s not my problem.