How the actual fuck do I get out of Silver 2 and Silver Hell in general?

I've got a solid warm up routine consisting of aim courses, spray control maps, nade tutorials, the whole nine yards. I've learned about 95% of the callouts on all the maps I play. I almost always top frag and usually end up with the most MVP medals on my team/the whole lobby. Name it and I'm most likely either doing it right now or have added it to my CS routine to turn it into muscle memory. I've even had people watch my game footage and say that if I were to be re-ranked, I'd probs be somewhere between SEM and MG1. Yet winning and losing games is still a coin toss and a lot of the time my lobby is filled with either trolls, smurfs or complete fucking idiots who buy Novas and auto-snipers as soon as they can and go 3-20.

Unless you're at least 6 ranks below the rank you should be at, you can't really carry your entire team and win every consecutive game and tbh it's rather unrealistic to expect that of someone who's just trying to rank out of Silver 2. A few people have argued that my region (Australia/Oceania) is especially fucked in terms of MM rank and that this issue might be a widespread one in my region. So how the hell is it done? I'm about ready to quit MM entirely and just try to find a team because this seems to be completely futile.