You're confusing private property with personal property. While this is a very common mistake, you can't claim to have an informed opinion about communism while still making it, it's 101 level stuff.

Further, you are also making the other very common error of assuming the state is oppressive because it is like some kind of monolith somehow cut off from the rest of society as though the peoples staffing it weren't as much part of society as everyone else, this is not the case, whether a state apparatus is oppressive and against whom it is oppressive is dictated by the class character of the state, a factor that is systematically neglected by the peoples using variations of "power always corrupt" truisms to "analyze" a state.

tl;dr: you're knowledge of communism and communist theory and praxis is very surface level at best, go read some reading list from prolewiki's library, To criticize something you need to know at least the basics of it first.