TypeScript is a different language from JavaScript, and C is a different language from Python, so I don't think those are good examples. Similarly, various macro languages that sit on top of something else are also languages in their own right.
And sure, you can always "fix" a language by designing a derivative higher-level language that transpiles into the old one. In fact, this is a time-honored tradition - C++ was originally just such a transpiler (to C). But the very fact that you have to do this points at the original design deficiencies.
