> C# [...] only really works properly in Windows

What do you mean with this? Maybe you are thinking of the old ".NET Framework" runtime, which only runs on Windows? Nowadays there is ".NET Core" which runs on macOS and Linux as well.

You do not write Rust yet will make blanket absurd claims about Rust being overcomplicated or not solving your problems. The additional comparison of Rust to PHP is also ridiculous for so many reasons it might not be worth even discussing, because it just seems bad faith from the start.

You're missing a very fundamental point here, and this is usually something I find with long time C programmers. C is a great, but old language, with decades of overhead on context, tooling, and lib understanding that make getting in to writing C substantially more difficult than say, Rust. We are still humans, and Rust isn't entirely trying to solve C from a fundamental paradigm of handling memory from a technical point of view, but more from a programmer one. Your comment about solving memory bugs is predicated on perfect human usage of C to not write the bug in the first place, which is precisely one of the many problems Rust is looking to solve.