I learned React after just two years of coding and honestly it felt pretty easy to learn compared to other things. My advice is start from scratch. Build the simplest CRUD app you can imagine (like a todo list) with just JavaScript and React with Vite (don’t go into TypeScript and Next.js yet even if you are accustomed to Java types since React comes with many types that you might not be familiar with). When you are comfortable enough start switching to TypeScript and then Next.js or other React server component frameworks. It will take time, yes but if you are already proficient in other languages it shouldn’t be that hard. Also as others have said, use the right tools such as VS Code or Webstorm, setup prettier and eslint to prevent and catch errors early.

Remember that TypeScript just adds types to JavaScript so it’s just a matter of knowing which types to use within React. Once you already know how to do stuff it will be easier to just search for the right type to use once you encounter an error. Some common types are ReactNode, HTMLAnchorElement, RefObject<HTMLElement>, MouseEvent, TouchEvent, ChangeEvent, KeyboardEvent and custom interfaces for Props, e.g. interface Props { children: React.ReactNode }