Different solution to smurfing (the current solution can punish normal players by chance)

First and foremost, I don't have a proper solution right now.

But I will explain why I say we need a different one. Take yourself being...at like plat 5-1 (all five divisions of plat are pretty sporadic). You'll inevitably find someone who's flat out boosted this season, if not by paying some nerd on boostmepls.com (or something?), by his premade buddies. At this point, you gain +18, and maybe lose -17 to 18.

But by chance, since plat is probably the most popular for boosting (other than D5), you'll encounter so much boosted animals that you actually manage to drop from x to 5, then possibly fall back to Gold. Drops like this are extremely brutal on your mmr, as plat 5 mmr can easily drop down to g1-g4/g5 mmr.

The thing is, if you incur one of these drops, fall all the way to ELO hell, then get back to a relative ranking (let's say, plat 5 0-60 LP), you'll still be incurring the same -20/-21 losses compared to gaining +17-+19 until you pretty much outrun the 'normal' mmr for plat 5, and go on to have it at 'above average' at least (na.op.gg perspective). I'm guessing this is to prevent smurfs from carrying ELO hell kids back to a decent ranking. But it punishes normal players too.

Like me. I fell from Plat 3 to plat 5, and haven't been able to achieve even plat 4 since I dropped to ELO hell and got my mmr somewhat normalized again. It still matchmakes me with animals every so often I even bother trying ranked again and I still lose 19+/gain far less. Like this game for instance...

https://gyazo.com/bd67a8bce2c3a9ac26ae639e7ff266e6 https://gyazo.com/d353190188f7be45caf6f36270c78a48

What do I even do in that game?^ I'm not the best, but I'm not the guy feeding ... everywhere, pretty much either. I checked na.op and two people on my team were level 30 and unranked. Meanwhile, they have someone on Nida boosting that account as a smurf.