patterns of matchmaking after a rank up

So I am a silver scrub, I am not especially good mechanically nor am I great decision wise. (i chalk it up to starting to play the game at 25, which is kinda old for a MOBA player to start).

 I have been on losses that tilted me so hard I had to go reads threads about how everyone's team was horrible to kinda get an echo chamber relief. I know it's bullshit, I don't' believe for a second that riot INTENTIONALLY forces bad teams on decent players to fuck them. IMO it's a combination of the MMR system, your mentality, and plain coinflip. so I just wanna distance myself from those people.

 But since I've started playing the game (about three years ago) I have in fact noticed one pattern that was always present in my ranked climb. The moment I climbed a division I would lose games even if I did really well. poor team decision making and enemy team just playing better than us. but I always found weird how my win streak mentality would not change the moment I climbed a division and get on the next game and even with that I'd still lose the game.

 I am not kidding, every time I get a new division (which I worked really hard in order to get), everything would work against me the next game in order for me to lose, then I would lose my positivity too and inevitably go on a losing streak.

Does anyone identify with that? For me it's always been like this from bronze 5 0LP (yes, I used to be there, but I got better lol), every division I'd get was never a definite thing, I'd flip-flop until I finally "settled my claim" on that division, all the way to gold 2 it's been like this.

Edited for spellcheck