But then I want web components that are not react web components, but cross browser standard web components, because if I use a js framework, I don't wanna be loading react as a dependency in the background and carry the same amount of bloat in my dependencies.

And then we are not actually far from what we were always able to do with traditional templating engines, which already allow us to define separate reusable components. It is what they were made for. Full circle back, throw out all the JS frameworks.