Reasons for losses in Lower Elo

I swear to god 90% of the games lost in low plat and lower is because everyone thinks they know better and decide not to follow up on an engage, when that engage as shitty as it was could have won the game because the other team wasn't all on the same page. That or they just don't have map awareness to get them in position. These games just end up in bicker fests instead of coordinating and making the simple play that needs to be made.. There doesn't need to be lcs level plays to take you from bronze to plat, just smart decision making and cohesiveness, but thats so rare..