Hello, @guaip.
Your predicament is not new and you are not alone. Good money has a way of distracting us from “new money” and the reverse is true.
You already know the answer to your question: you need to learn Javascript and learn it good. Then you also need to learn React. And you need to do all of that while applying to jobs before your savings run out.
If 70% of the jobs are React, why are you spending time on Vue?
If the jobs require knowledge of a frontend framework, why are you confused?
You know what to do. Now go out and do it.
Alvin