Well what now?

Over the past month I've been hard stuck silver 2; I consider myself as being able to play consistently well and know when I'm messing up bad.

My provisionals weren't the greatest - 2 out of 10 wins, landing me in Silver 4. However I quickly climbed to Silver 2 but soon after I have experienced nothing but consistent lose streaks which has brought me down from Silver 1 promos (twice) down to Silver 3. I HAD a 60% Winrate.

But now I'm not even breaking even, I do believe Elo Hell does and doesn't exist, as I'm not one to consistently press the blame on my teammates. However...

The past 6 matches for example, albeit the few screw ups from me, I have experienced nothing but defeats and was dropped to s3 75 lp. The best two examples I have where I legitamately believe I couldn't have done any better were my last 2 games as Trynd and Sion.

The Tryndamere match was a SURE win.. but here's the crutch: no matter what I said our Udyr would not listen and instead attempted to force 4v5's on multiple occasions which Gave the enemy team easy objectives. I knew what I was doing, told him multiple times to stall the enemy, avoid being caught, that if they can't see them then ASSUME it's bait.

For the first few minutes he listened, the team stalled, enemy panth went top and I killed him + took inhib tower. Then it went to hell and Udyr chased a "solo" panth with the enemy MIA. Guess how that ended. A defeat.

Then there was 2 matches I had as Sion. I normally go health stack build and it works a charm.. but this match took the ABSOLUTE fun out of it. Taliyah was meant to be our jung, but unfortunately we didn't realise he had no smite or the right runes until AFTER the match started. So he begged for my lane and I was forced to jungle despite having no jungle item.

I even said to him that I have never really played jungle seriously. So... match goes on, my blue was stolen and Taliyah proceeded to int against Shen 0/3 in the first 8 minutes. The match ONLY started to turn around at 20 odd minutes because I was just so tanky and kept the fed Jinx locked down.

...then, game over. Taliyah went solo to dragon despite ping spams then proceeded to blame everyone else (this was the guy constantly spamming for Ff in chat). I just lost it and told him his getting caught then and there was the end. We just DID NOT have the dps to fight back, and it didn't help that while I was soaking every bit of cc and dmg from Jinx + Veigar combined, our mid and adc was more concerned with chasing Nunu.

Other matches were legit lost due to teammates attempting to contest baron or force teamfights against superior/ahead team comps.

What can I honestly do? I'm so tilted right now. I can even see my overall mechanics and macro play suffering incredulously from it as it genuinely seems like that it doesn't matter how good or consistent I am, or where I identify my weaknesses and improve, I get landed with a less inclined bunch and suffer consistent losing streaks.

I even had a Master tier player spectating me off-tilt and I supposedly should at least be low plat. Where am I going wrong?

Edit: note that before the losing streaks got me, I was playing against gold 3-4 players.

Tge match where I was Trynd, Naut and Udyr wanted me to initiate and I told them that I needed them to soak up cc before I go in. I got blamed for the defeat by our MF after they chased panth and died in a final 4v5 which lost us the match.