Can Rust Be Used for Full Applications or Just Systems Programming?

I’m new to programming and wondering if learning Rust is worth it. I want to know what kinds of projects people actually build with Rust.
Can you make real-world applications with it, or is it mostly for low-level/system stuff?
Also, how good is the ecosystem right now? Does Rust have solid packages, libraries, and frameworks compared to languages like Python, JavaScript, or Go?
I’d love to hear what projects you’ve built with Rust and whether you think it’s a good language to invest time in learning.