Young Blender friend the study of art has always been a excruciating journey punctuated by moments of discovery. Even when we held a watercolor brush with maybe Indigo black ink and the results were immediate. But, then you also had a connection to the tool. Start with a certain pressure roll the brush and…
well you get the point since with a computer we have lost that connection. Now it’s done on a keyboard and to this old man it’s simply not the same. But, of course our photographer friends never felt how a brush responded in their hand while turning out art and recording history.
My point being in graphics who can give you a definitive answer. If your machine at the present time is not strong enough for realistic animation simply concentrate on stills if realism is what interest you. But, if I might here is another thought. If you don’t have a background in art carry on a parallel study in the basic rules of art. Composition, weight, center of interest, high key - low key, perspective, scale, etc. I saw a talented technician on this very forum turn into that and a accomplished artist by such a parallel study.
And, this day and time all of that knowledge is free with any browser which wasn’t always the case. Blender allows talented individuals to produce art regardless of the machine. Somewhere a youngster is honing their skills doing stills while their interest might be animation when the planets align and they have a faster machine.The Blender Forum can help you on this journey with specific questions but the journey is yours to take. May it be a rewarding experience with a minimum of rabbit holes along the way. A start might be not caring one wit about the equipment and concentrating on the art. And, I say this having being exactly in that place you find yourself. Pursue the art itself and believe me the rest will come together. Take care and enjoy the journey.