What I do is to run the exiftool to strip all the metadata from the image. Next, I check if there are any identifying details in the image like landmarks or background details (e.g. stuff on my whiteboard). And finally I check for the unwanted reflections or for the setup that could be recognised outside the community I share the photo with. Last but not least, I never share a photo in more than one place.
I get you’re just joking here but I would like to point out that this is a flawed way of thinking. Someone will spite you for whatever reason they can think of and will try to ruin your life whether its because of your political beliefs or just because of who you are as a person, cause sadly thats the internet right now