Everybody and their Grandma advice

Katie
Does anyone else get people, even people they don't really know, tell them, or suggest things to stop your baby from being fussy. But you already know the cause ? 
I know most people aren't being mean about it, but as a FTM it makes me almost second guess myself. 
Most of the time when my son cries it's because he is tired, too many people and over stimulated. Mostly because he is tired and I get people telling me things it could be and it honestly starts to stress me out where I just want to leave the place I'm at.