I question why I face Gold IIIs as a Silver sometimes

I haven't played in a while, about a week, but I still find this topic an issue. (Until the next year, I'll mostly play for fun but I do want to talk about this)

I faced a Gold III Jinx after a 10-15 game winstreak once in ranked. I won. Despite winning, I found it odd that I had a 10 game loss streak immediately after. About 2 games, I had more 3-4 deaths. The rest were lower than 4. CS was average. Kill participation was at 86% though. What happened?

First off, let me clarify. I think 3-4 of those games were lost because I could have also done better things. (Basically, attributing my losses to the MMR system completely isn't my goal. My goal and argument is to highlight a flaw in the MMR system that contributes a major factor to your career and WR)

A lane lost and we did not get many kills. The lost lane also fed unfortunately. Several people were fed or one champion. There was a troll who was placed on my team so I can carry them. (32% WR and I will not name them)

After the 10 games, I spiked to my regular pattern of 3 wins and one or two losses. This time, the teams had much more balanced statistics and I was no longer facing golds.

If I'm going to face someone an entire elo ahead of me, I expect that I shouldn't have promotions. It's quite annoying when being forced to lose just to have a balanced WR. I can confidently say the Golds I face aren't difficult for me. However, carrying an entire team lacking in experience compared to an enemy's is.

There's been multiple instances where I faced golds in ranked. One time I had a ex-diamond who was gold which was considerably jarring. I've faced plats in norms.

The MMR system is quite bonkers in these scenarios. Players shouldn't be forced into a 50% WR. They'll climb to their elo and hit that 50% somewhere.

Thoughts?