Fresher. Need help with choosing technologies.

I've recently started my journey with a product-based company as a fresher, where my primary focus revolves around backend development using Node.js. Although I thoroughly enjoy delving into backend architecture and databases, I find myself at a crossroads. Heard many discussions among seniors of the rise of Deno, Go, and Rust, suggesting a shift from JavaScript. In view of a long-term perspective, I am contemplating dedicating time to learning an additional technology and engaging in side projects. Could you kindly share your insights or recommendations based on your experience? Your guidance in this tech landscape would be greatly appreciated. #BackendExploration #TechInsights