What is the point in playing a game where your involvement in winning/losing a game is little to non

Seriously what is the point of playing this game? Most of the game is down to your own teammates, not your skill in the game. Litterally last game I went 10/0 in lane, took 2 early turrets to try and hep my feeding mid laner and jungler out , I stole a drake for the team and even STOLE BARON to help my team yet we still lose, why? Because even if you do well, you have little impact on what your team will do. Atleast in games like counter strike riddled with issues if you are good enough you will win every duel and clutch a lot of rounds, giving you a much higher chance of success, however in league it does not feel this way at all. It is often unrewarding if you do well against your lane opponent because the chances are someone on your team will feed and completely negate the fact that you did much better than your opponents. What a joke