Hello @NesiaGrunn, and welcome to the forum!
As is always the case, when someone new to digital painting begins (although this misconception also exists in real-life painting, albeit less frequently), they believe that all they need is the right tools and brushes, and then everything will fall into place.
This is a fallacy!
Digital painting, like almost any activity that involves learning skills, is no different from painting on canvas. Only when you have learned how to use the brushes and when you understand and master the use of all the other related media in painting, only then are you truly able to create works of art. Of course, you can specialize in just one area, for example your pencil drawings, then it goes faster because you only have to learn this one area, but without practice you won’t be able to create works of art at the same level!
I don’t know how many years it took you to learn your paper drawings on a wide variety of media, cardboard behaves differently than glossy paper, possibly with different pencils, in order to be able to repeatedly create these drawings in consistent quality, but you will also have to invest time in practicing here in order to achieve results like those in your example.
Furthermore, your idea that it is not possible to paint digitally in such a way that it resembles a real-life image is incorrect. There are enough examples in our forum gallery alone to disprove this assumption, as it is simply wrong. At best, this may be true for certain niches, but nowadays it is often just a question of having the right software for the job. There are programs whose watercolor images cannot be distinguished from real ones, an area in which Krita is definitely not at the top of its game, but Krita has other fields in which commercial programs cannot compete. Many people come to Krita because of its brush engines, which are unmatched even by Photoshop, but here too, it must be said that there are few exceptions where Krita cannot replicate a PS function. So what?!
But okay, I will at least name you excellent pencils you can try to use for your sketches, but it doesn’t mean you have found a shortcut, only good tools, tools that are in Krita too, but you haven’t been able to identify them by now, because your skill in using them doesn’t allow you digital what analog is no problem for you, but that will change with time.
A bundle is installed in Krita via the menu ‘‘Settings’’ >> ‘‘Manage Resource Libraries…’’ and in the opening dialog you have to click the button + Import in the next dialog browse to the downloaded bundle, select it and confirm the selection. Now Krita imports that bundle, and you can use its content, so the brushes in case of this bundle.
In case this BUNDLE comes in an archive-file, like ZIP or RAR for instance, then you have to unpack the archive to get the BUNDLE-File it contains, then you can proceed as described above.
Michelist
Add/Edit: And a few more of my favorites: