They do exist… They’re over at Lemmygrad.ml, I ventured over when I had the same question

Their ideology is a mess, they don’t have a roadmap beyond “workers of the world unite, then we’ll figure everything out”. And some of them think China and Russia are communist, or at least socialist… Which first off, they’re not, but more importantly they’re authoritarian regimes, which gets glossed over

It’s a fraction of the left, and a fraction of them are so focused on America bad they ignore what China does, and a fraction of them outright deny China or Russia have ever done anything wrong… I’ve encountered them online, but it’s very rare - especially if you don’t go looking for them