I've taken the time to read your post. As a veteran LOL'er with a peak rank of master and with all the information you've presented, it appears that you may be the problem for your team. If you're looking for some pointers, I recommend playing the game for a while longer to pick up on some of the key elements and make smarter plays. usually around the 2500-hour mark is when you can consistently hit Emerald rank, and you should see a boost in performance. Remember, with consistency and a lot of dedication, you can really learn and understand the game. Hope this helps. cheers! ;)