Recently a junior front end engineer at a startup in Singapore reached out to me to ask me how front end development as a career.
I'm still doing a lot of FE development for work. Less in a personal capacity ever since I stopped working on Docusaurus as a side project. You can check out my GitHub to see what stuff I've done. At work I'm in-charge of oculus.com and built the infra for it. I built a design system of React components for the content developers to develop the marketing pages.
Learn your fundamentals well. There are many UI and CSS libraries out there, but a good FE developer still needs to know how to build a website without them. Peek beneath the abstraction layers and understand the problems these libraries are trying to solve, do not use them blindly. Keep building stuff - try to build a simple version of the libraries you frequently use, build interesting user interfaces and products, etc.
I somewhat answered this in another blog post. Lemme know if your question isn't answered after reading it.