High Elo is quite depressing
The thing I hate most is that you can't play with your friends anymore. 70% of all ranked players are either in Silver or Bronze and that includes nearly all of my friends. Playing normals with them and getting paired up with other Diamonds is just like watching little chicks walk through a grinder.
Enjoy your time in low elo, make as many friends as you can on league and climb the ladder together. Stop blaming each other and help each other improve so at least when you make it further up, your friends will be right there with you.