@Eloka Every branch of studies has their own ontological, epistemological, axiological, and methodological assumptions. Exact and natural sciences aren't the only areas of studies which can be researched, intepreted and analyzed. Social sciences, video games, art, etc. can be studied, as long as your research adheres to the aforementioned philosophical assumptions and peer-reviewed criteria.
The fact you're claiming that only exact and natural sciences can be supported by evidence and facts tells me you don't know about research methodology. Furthermore, your claiming that only something observable and "repeatable" (what you probably mean is testifiable, as even within exact sciences many theories aren't "repeatable") can be researched suggests that the extend of your knowledge goes as far as the late 19th century, when Empiricism was the only accepted scientific method.
