Why do i get 15 lp when i win in ranked

kankertering123 - Summoner Stats - League of Legends
kankertering123 / Silver 1 30LP / 277W 284L Win Ratio 49% / Bard - 70W 57L Win Ratio 55%, Master Yi - 25W 15L Win Ratio 63%, Jax - 19W 19L Win Ratio 50%, Sejuani - 17W 14L Win Ratio 55%, Thresh - 14W 14L Win Ratio 50%
I dont understand why i get so less lp when i win in a ranked game i try my best to hardcarry the team. My stats are good like 18/6 or 20/5 with good cs and i still get 14 lp or somthing like that. and when i lose i get 24 LP OFF!!!! how can i climb when i get 14 lp and i Always got a bad team that i need to carry. can sombody help me?
Report as:
Offensive Spam Harassment Incorrect Board