[vanusa]

Work on personal projects, or better: projects which directly help other people (for a non-profit, say) so you get some actual users and visibility. Then start building it in whatever XYZ stack you like.

Also: not every job requires React (and in fact many people hate React) - you might want to look at Vue.js, or perhaps other frameworks (I'm not a real JS person so I wouldn't know what people are using these days). And then even if you do apply at a React shop then (if they're smart and worth working for in the first place) they will definitely want to talk to you - especially if you can articulate why you made the framework choice that you did (and how it compares to React).