There are no Air France representatives on Flyer Talk.

I know that it is frustrating to see people wearing masks incorrectly, but insisting on 1.5m/2m between each (group of) passenger(s) at check-in is unrealistic, particularly when they are then funneled onto a metal tube where there can be no social distancing.

The best strategy is to accept that you will never see others adopt the high standards that you yourself would like, and to take yourself out of environments where you feel uncomfortable. And yes, this means forgoing travel, as I am currently doing.

I would also advise you to stop seeking to contact Air France about these specific complaints. Nothing will change based on the unsolicited concerns of a member of the travelling public; Air France will instead respond to criticism and feedback from more official sources as and when necessary.