There's so many of them and they're so hyperbolic and wrong. Take good old @witte_sergei, claiming here during the huge gains Ukraine had last year that the "scale of Ukraine’s defeat at Lyman will become clear in the coming days": https://twitter.com/witte_sergei/status/1575975278652043264

Meanwhile Lyman remains under Ukrainian control: https://deepstatemap.live/en#11/48.9534/37.8129

That's just one of them, this guy was on an absolute tear during this period. He deactivated his account to clean it up a little because it got a bit too obvious and hard to hide at one point.

Their strategy seems to be to just flood every channel with all sorts of ridiculous things to make people think "I can't make sense of this stupid conflict, it's too complex" and tune out. It's not a bad approach within Russia and it certainly strikes a chord within a few people in the west. It's just that if they don't clear their tracks when they're wrong you can pretty easily identify them for as pro-Kremlin trolls