Riot has shit LP distribuiton

I do not understand the logic behind the ranked League Point distribution. In my opinion, it is 100% flawed. A player is constantly trying to climb the ladder is never rewarded for playing well and winning games and is HEAVILY punished for one to two simple losses. Riot seems to have a monopoly on pissing off lower elo players and toying with their emotions. "Ohh, I'm doing well, won four games in a row and finally made it to promos!" lose both games in promos due to trolling and teammates lacking skill. Then gets pushed back down to bottom of the division for losing TWO games (AND WHILE IN PROMOS). A PLAYER SHOULD NOT LOSE LP FOR PLAYING WELL AND MAKING IT TO A PROMO. 100000% flawed system. AND losing one game with 0 LP automatically merits a de-rank. WHY?!?!? "I some how made it through the hellish push through promos, ohhh lost a game back down I go." How come losing TWO game can have a bigger impact on a player than winning 4 or 5 games. Players need a reason to climb, not a strong hatred towards the ladder due to incomplete and completely broken LP logic. Want to know why people rage and the community is full of toxic and abusive players? Because you have single handily created them out of a flawed system. Fix the system, fix the community. The in-game play is wonderful. Constant balance changes and updates. Just do the same for ranked. And don't even get me started on dynamic queues.