This is Annoying !!!
I’ve noticed the same thing. I might be biased but I’m having a hard time figuring out how points rank points work too.
Count yourself lucky. I’m in low gold now after starting the season in Platinum. I get +7-10 for a win and -20-27 for a loss
I was at position 100 and one game later i wasnt in ladder. Took me like 8-7 win streak to get from 250 to 100 though.
If you wont get lucky or abuse the matchmaking system as much as possible, you wont climb. (duoQ / Q at night so you play vs gold / dodge other players in top 50)