I bike commute with an old Hero 8 on my handlebars, and I never bother controlling or setting it up or anything: just power on, press record (which dismisses the nag dialog to connect it to your phone). That does mean the timestamps are always nonsense, but I am not too worried (I guess if I get run over again the lawyers can argue over if the one video on the card that shows me being run over is in fact from the day in question...)