The downside of being an inexperienced frontend developer is the doubt about which framework you will focus on working on. This question stayed with me for a long time when I started to study and work as a frontend developer.
In the beginning, I wanted to "embrace the world", that is, get all the frameworks to work with and study at once. I studied Angular, VueJS and React. All together! Imagine the confusion that made the start of my career!
But, thankfully, information on the Web is not lacking and through some videos I watched on YouTube from experienced and influential developers, I saw that you should focus on only one framework and specialize in it.
The choice was difficult and easy at the same time. Angular, I don't like it very much, as I think the style libraries are too limited. We have few style libraries for web development with Angular.
React (which I work today) is much better. It has several libraries and because it is created by Facebook, the style libraries are unlimited, there are many creation tools.
I like VueJS too, but as it's a relatively "new" framework, there's still a lot to be developed.
In this dilemma, I chose to delve into React. Today, all my applications, tests and projects are developed using React for Web development and React Native for mobile.