The reason climbing is so frustrating

Can we somehow do it that you don't lose so much LP for defeat everytime your entire team feeds and AFKs and there's nothing you can do about it, just stand under the last standing turret and watching it fall with tears in your eyes and words "...so there goes another ranked..." in your mind everytime?

You know, I'd just move on, but when this happens so often, it just leaves you wondering how the fuck is this system considered accurate by someone.

Idk, I know it would be abusable, but what if the game records the performance similarly to the grade, compares it to others performance and checks the frekvence of players movement around the map so it knows they don't just stand under turret and farm and then decides you were not the reason you lost, it clearly was your 1/12/3 teammates? Or if it would be TOO abusable, what if we made it a charge-per-day like the First win of the day works, so that if you lose once a day and your performance is significantly better than 3 of your teammates, you lose only like 3 LP? Or even no LP?

This could actually encourage people to play safer from behind and would not affect shiny fast LCS matches because LPs do not work there.