What do I do if I want to play a serious game but my friends keep messing around? It’s just a game but one of my friends literally does everything he can to sabatoge the entire campaign every turn. Nobody really pays attention to the campaign or the plot of the game but they are the only people I have to play with. Occasionally I would like to play a game with an actual campaign not just random choices. Should I go with the flow or try to get them to take it more seriously.
Talk to the group, let them know how you feel. If they don't mesh with you, maybe you need a new group. Sometimes your friends don't work well with your idea of a fun game, they can still be your friends. In regards to the one friend who tries their best to ruin your game... Pull him aside and talk to him, maybe he doesn't realize that your campaign is serious and not to mess around.
DairyMcFuckinQueen has a real great reply. What I do in my Campaigns that I go to make serious I throw a bit of their messing around in there to keep them hooked to the game itself.
It's worked for me and i hope it works for you because people like that can get really annoying.