Unacceptable Conditions for Ranked Matches

To begin, I'd like to state that I love playing League of Legends, it is by far my favorite game ever made. With that said, there are certain flaws that I know will never truly be fixed. Playing ranked in Bronze IV, I have gone from being in my series back to somewhere around 80 LP over and over again. Surely, if I do not deserve to be a higher rank, I would not be writing this or feeling so cruddy. Each and every single time I reach my series, I have one of the following: An uncooperative team that types their arguments more than playing, A feeding teammate who is intentionally walking to the enemy and dying, An AFK who either never plays or disconnects halfway through the game, and finally, An extra toxic teammate who doesn't let anyone make a mistake without making a comment. Now I know some of these ailments cannot be cured, but easing the pain of losing due to one of these should be a priority for Riot. If I perform well enough to win a game, and my team is doing well enough for us to win, but something prevents that outside of the skill level and gameplay, some sort of system should be in place to forgive losses that were caused by such events. I really wanted to keep this brief so thanks for reading, I know other summoners can relate to this issue.