Improve README.md readability

[LunaStev]

The current README.md could benefit from improved formatting and structure to enhance its readability. This task involves reorganizing sections, improving headings, adjusting line spacing, and possibly adding visuals (like badges or diagrams) to make the document more user-friendly.

This is a good first issue for those looking to contribute to the project by improving documentation. No prior knowledge of the codebase is required — just basic Markdown skills and a sense of clean documentation design.