I’m not sure eating lunch or going to a film on your own is socially unacceptable. People judge things to make themselves feel better, but I go to lunch on my own on a friday every week cause I’m in a certain part of the city on that day. Films here and there, also- wife and I just saw Oppenheimer last week and someone was there on his own in the row in front of us. I yelled looooooser and threw popcorn at him and when he looked back with tears in his eyes I tongue kissed my wife while making eye contact with him and giving him the finger, then said “you’ll die alone haha”. That part probably invalidates the previous part of my post now that I think about it, but I think lunch is ok.