I think that’s a nice hot goal to have, but you’re shooting yourself in the foot by aiming so high (pardon the tortured metaphor). Start with the basics of webdev and work your way up.
Like I’m a senior dev, and for years I thought I understood frontend. Finally, I had to reckon that I did not, and took a course on how to build a web app using React on Typescript + various popular libraries (YMMV).
Yeah a lot of it was boring or stuff I mostly knew anyway, but actually sitting down and going to school on it, like with pencil and paper, was a big help. So now I can actually contribute to FE/web dev. And all those little things I feel I should know are either known, or knowable because now I understand what to search for.