Uninstalled LoL

I uninstalled LoL just now for the last time. This game is just too aggravating to play at times. I no longer feel like the fun outweighs the frustration. It feels like i play extremely well for a week and then the following week i play like the worst player ever. I don't even understand how i fall under the same pattern, i just do. When you win or lose a match 80% of the time you win/lose by a long shot.

I am a terrible player at this game, started B1 last year (first year playing) and have only been able to climb to S2, and am currently S4. I have put so much time and money into this game, and to be honest the game is good and i really do like it, but i just feel i am putting so much effort into it and days at a time i play like a God, but other days i feel like no matter what i do i just do bad. I can win my lane even against a hard counter and then make this one mistake later on in the game and throw, or win lane only to find out the team fed so hard, or on rare but extremely difficult situations i have "laggers" whom cant do anything, or AFKers.

Maybe i will re download the game when the following season starts, but probably not because by then the game will probably have changed so much because of the constant patching (i mean seriously). I leave to basic training next month and i will be busy the next 6 months or so, so i won't have time to play League anyway. Just needed to vent a little on the forums, no harm done right? The last straw was my last match, i felt so terrible losing the way i did despite having completely won my lane and doing very well all early and mid game.