Welcome to the real world. Where code is not perfect, but somebody pays for a timeboxed piece of work and legacy code will exist. You will not come into heaven

Welcome to the real world. Where code is not perfect, but somebody pays for a timeboxed piece of work and legacy code will exist. You will not come into heaven straight from university and you will have to learn to work in environments like this. Blame your study for not telling you about how the real world works. Don't blame legacy code because it's something that exist no matter how unicorny the world is. Negotiating managers and project owners is even more important than just being able to write testable code. So take your skills and apply them (iteratively) to your current job, or go work at a startup where everything is hip and trendy. But remember you're at the bottom of the ladder right now, and you're the one making things better for companies and yourself. Also remember the golden rule: No one wants to pay to refactor code that works into more beautiful code that works.