I'm probably quite young, but I learned programming in C and assembler as my starting languages.
That said, I have worked on many frameworks including things like ASP.NET and Java Enterprise stuff. My first one was probably MFC.
Here's the key thing that got me for a long time.
Learning a new framework is like learning a new programming language from scratch. You have to put in the same effort into it. At least I need to as I need to understand what the framework is doing before I feel comfortable using it.
I reflect at all all the time I spent learning C/C++ and it was filled with books and trial and error and nuances.
Yet, when first presented with Frameworks, that is generally not how it is approached in companies. It took me years to get pretty good at C and C++ including STL... Frameworks are thrown around so quickly, it is almost like they just expect it to be easy to use and you just call a few methods and away you go.
So that is the first thing, you need to put in the time to learn it properly. There is also a certain amount of trust that occurs. I've found myself learning to trust frameworks more. I can't really explain it, but I trusted MFC when I used it. For all the weirdness it used and preprocessor crap, Microsoft provided a pretty good IDE that made it easy enough to use and get started. Boy was there a lot of mysterious boiler plate code.
And yes, MFC is technically C++ I guess, but you really needed to learn MFC to actually do and understand anything.
It's the same with say Java. You might learn Java, but you need to learn Spring or Hibernate or Maven or whatever.
A lot of modern frameworks don't really come with that nice custom tailored IDE. Some do integrate nicely with say Eclipse or whatever, but it still generally leaves you in a state of uncertainty.
That is one area I've always appreciate MS in. For their frameworks, they tend to provide the custom tailored tools to actually let you use it.
But lesson. The lesson is, it's going to take you a while to learn the framework. It's going to take you even longer if you plan on being an expert and knowing how it works underneath.