Really seems like you haven't figured what you want most out of the game. If you want to just have fun and don't care about winning play quickplay. If you want teams that are focused on winning play competitive.
I don't see why you're complaining that competitive mode ruined quickplay when the issue is actually with you being too caught up in winrate for it. Even putting that aside both teams will be just as un-coordinated on average so it really shouldn't be an issue as far as winning goes anyway.
Also to reiterate what someone else said your complaint about being split up from teammates you get on with is irrelevant. It's very easy to group up with those people post game or send a friend request so you have a wide pool of players you like playing with listed whenever you play the game. I do it all the time specifically for competitive and it works perfectly well for me.
I don't see why you're complaining that competitive mode ruined quickplay when the issue is actually with you being too caught up in winrate for it. Even putting that aside both teams will be just as un-coordinated on average so it really shouldn't be an issue as far as winning goes anyway.
Also to reiterate what someone else said your complaint about being split up from teammates you get on with is irrelevant. It's very easy to group up with those people post game or send a friend request so you have a wide pool of players you like playing with listed whenever you play the game. I do it all the time specifically for competitive and it works perfectly well for me.