League ranked system is an absolute joke.

I finished last season ranked plat 3 flex, and I played my first game with 4 friends who finished last season between plat 2 and plat 4 flex too. after 1 game we all landed at plat 1 which is crazy stupid.... then we played 2 more games and we got diamond 3 which is absolutely insane. And I thought this is 100% a bug . I woke up the next day and I logged in to see that I was demoted to silver 3 from diamond 3. Which meant that have I stopped playing after my first game( plat 1 ) I would have been bronze 1. FROM PLAT TO BRONZE ? I didn't think much of it at first because I was always a fan of a hard reset, anyways this happened 2 days after the season started. The funny part is that the people I was playing with stayed at diamond 3 and didnt demote to silver to this day even after finishing the 10 games, and I submitted a ticket asking about this , they said its "normal", HOW is it normal for a plat 3 to rank bronze 1 and another plat 3 to rank plat 1 ???? How on earth is it even possible to rank higher than ur previous rank after winning 1 game only ?????????

Idk if this is a bug or what is this , but riot needs to wake up ,it's not a small indie game to make mistakes like that...Stop making prestige skins and giving everyone a billion damage and ruining ur game , and focus on important stuff for once.

tl;dr I was ranked plat 1 from plat 3 and climbed to diamond with 2 more games then got demoted out of nowhere to silver 3 even tho my friends who were plat 3 too stayed diamond.