As an employer I would be negatively surprised if a candidate for FE never heard of react, angular, etc. But I also see a red flag of the candidate were to assure me to be knowing all of them bottom up. That would mean a lot of toy projects and unstable personality, if not plain lies. I'd be looking for someone able to work for some years on a code base, grasp its stack, improve the overall structure, quickly find and fix bugs in a sustainable way, etc.

Or move to the back-end, where things move at a more survivable pace. Here's the dirty secret, too: for the most part, the work you do there is actually easier than front-end work, since you have better tooling and frameworks that don't shift under you like quicksand. And building a CRUD backend to a REST API might be a tad tedious, but it's a whole lot less fiddly than mucking about with CSS and trying to make web UIs pixel perfect in every mongrel browser under the sun.

Honestly I would if not for the fact that backend interviews always test Crack the Coding Interview style data structures & algorithms knowledge, which I have no interest in spending my limited spare time preparing for (I didn't major in CS).