I'm not a react dev per se, I've used it some, not a 'master', I prefer Vue, but I wanted to chime in for newbie devs, take this roadmap with a grain of salt, y

I'm not a react dev per se, I've used it some, not a 'master', I prefer Vue, but I wanted to chime in for newbie devs, take this roadmap with a grain of salt, you don't need to be an expert at using all the tooling and all topics mentioned in this diagram to get started and build stuff. A topical understanding of each thing will suffice, then dive in deeper as you need it for whatever project you're working on. If you're between projects on your job, or between clients if freelancing - by all means pick a weak subject and level up on, but don't let the complexity get you discouraged from learning in the first place.