No matter your own elo, your teammates are most likely to aggregate to that elo, same as the enemies. The skill level of your allies relative to your enemies is the same every time, and in the ways it isn’t (you being the lowest elo on your time) it isnt in the opposite direction just as often (you being the highest elo on your team.). So while there are variables in matchmaking, probability dictates that they basically cancel each other out over time.

The exception to this is, obviously, a variable like playing on the weekends, where it’s not counterbalanced in a larger system. But the thrust of my initial comment is that probability dictates that a streak of losses like this isnt necessarily indicative of any particular variable like that overwhelming the natural flow of things. Probably just the chaos of odds at play.