[notjustanymike]

I'll be a little more specific with my advice, so it may or may not help. This advice is for front-end application development.

Learn Angular. Not react, not vue, not svelte.

Angular may not be the best, fastest, or most popular web framework out there but it is a comprehensive, well documented framework. This is tremendously beneficial to avoiding JavaScript burnout, as you're not constantly fighting with different library changes and upgrades. Those other libraries are great but I feel for your needs this is the best place to start.

In going the Angular path you'll also learn Typescript which, love it or hate it, is a popular modern language here to stay.

You could also chuck in SCSS if you're interested in programatic CSS.

Again, not the most conventual advice but a good possible direction.

[wiktorcie]

You should learn the best possible tool available at the moment to do the job. There are better frameworks that will make you more productive.