Grandmaster in gold 1 game

Recently, I have played some ranked flex game. I was place gold 2 57 lp and i was playing with some low plat and gold players. I won and got to gold 1 and played another game. I felt like the game wasn’t as easy as this first one. The game ended and I look up op.gg to see the ranks. Most of the player were diamond or high plat and there’s a big difference with gold 1 and diamond but i kinda understand that I play with some high plat because my solo/duo mmr is High plat. https://imgur.com/gallery/l7p4om2

Also one of my teamate is grandmaster in solo/duo. It’s suprising to play with master or grandmaster when you are just gold 1... https://imgur.com/gallery/ysTy7Fq

It kinda suck to be honest because im playing in my provisional rank placement as a gold 1 and playing vs diamond. I can’t win any lp so i might start the season with plat 4 because im playing vs high rank player while im supose to play with low plat and high gold...

Here’s the game in question https://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2985420072/239437862?tab=overview