I gotta echo what Marco Alka said, learn to do everything you currently know how to do without the crutches that are frameworks. or in many cases they're not crutches, they're hobble skirts... in some cases they're even a sledgehammer to the shins ala "Misery"
Until you can do it without the frameworks, you aren't qualified to know if what the framework is doing is the correct way, most efficient way, or even the simplest way. This is why beginners should NEVER be allowed anywhere near "frameworks" and why MOST of the big fancy popular ones are -- to be brutally frank with a highly unpopular opinion -- incompetent nonsense.
More so if you take the time to learn those underlying langauges -- and to use them PROPERLY with full separation of concerns -- you may in fact find that EVERYTHING you've been sold on said frameworks is nothing more than one giant lie rooted in apathy, ignorance, and wishful thinking; propagated not through actual merit, but from the same propaganda techniques and psychological failings such as bandwagon, glittering generalities, transfer, and card stacking that are the cornerstone of most major popular delusions; from garden variety snake oil peddling to "monuments to the stupidity of mankind" such as faith.
How are you at working with proper semantics, FULL separation of presentation from content and behavior from content so you don't have HTML full of things that flat out don't belong there? How well does what you're working on handle if client-side in the browser scripting is blocked? What about users on non-screen media targets? Are you derping in classes presentationally like "text-center", "clearfix", or "w3-red" or are you keeping your HTML saying what things ARE, and not what you want them to look like.
REMEMBER, 99.99% of the time what things look like has ZERO business in your markup. Anyone telling you otherwise isn't qualified to be writing HTML, CSS, or JavaScript! Yes, that includes every single person making or using so-called "front-end" frameworks like bootcrap or w3.css. UTTERLY AND COMPLETELY UNQUALIFIED to write a single blasted line of HTML!!!
But Joe forbid anyone come right out and say any of that.
What can you do WITHOUT the frameworks?