They think their Glicko like systems work for lower rated players. They don't. You can't speak a language until you understand the basics. So, you can't jack up someone's rating hundreds of points and then demolish them. This doesn't work, and it messes up the rating system. So, lowering your rating so you move from level 1 to level 2 to level 3 to level 4 and so on and so on is the ONLY way to adequately correct their wrong.
The consequence of this is what you are complaining about. It isn't really sandbagging in the sense you are trying to get a prize or money, but the effect is disguised as the same thing.
What they ought to do is stop with this 5 game quota, stop with jacking up rating points, and simply put people in a rating bracket after they win against a bot at a chosen level. If you choose 1200, you immediately play 1200. A win is then 10 points or so and you grow incrementally.
Another thing they need to stop doing is ping-ponging between easy idiot wins and baffling confusing losses. This is how they are trying to place us in the right rating range, not 1, not 100, not 10, not 90, not 20, not 80, not 30, not 70, etc... This unnecessary way of pairing us means we play USELESS games and the pairings only bring frustration.
But they won't listen, they will defend their stupid formulas because they work for 2000+ players.
I'm writing this here out of exasperation that Chess.com refuses to do anything about the Smurfing problem. I encounter and report at least half a dozen of these players per week, but their accounts remain active.
As just one example, the user "[public accusations not allowed -- MS]" has a bullet rating of 100. Out of the 400 bullet games he's played, he's won 227 against people rated 1,000+, 109 vs 1,500+ and 25 games vs 2,000+. He's even beat a few 2,300 and 2,400s!
Again, this is supposedly a 100 elo player who's beating people with elos more than 20x higher than his.
I used to be able to reach out to chess.com support via email and, to their credit, they would ban these players. But now that they've removed the ability to interact with them by email, these sandbaggers are being allowed to run amuck and ruin the experience for the rest of us. Clearly, Chess.com doesn't care about the sandbagging problem on their platform.