My experience: When I decided to get back into photography back in mid-2019, I bought a Nikon D5600 and a 18-300mm DX lens. Since I didn't know what genre of photography I wanted to get into at this point in life, I thought the 18-300mm would offer me the most versatility. When I tried photographing great egrets at a lake, I was very disappointed when I got home and saw the photos on my computer. Even at 300mm, the birds looked too small in the frame, and I had no latitude to crop. That's when I knew I NEEDED more than 300mm if I was going to photograph birds, which is what I've been doing ever since.
By the fall of 2019, I bought a 200-500mm lens. At 5 lbs, it was a VERY heavy lens compared to the DX lens, but NOW, I was better able to get birds to fill the frame, at least so that I had more options to crop in post-processing.
But within a year, I started getting tendinitis in my right elbow, and I was pretty sure it was from hefting that lens. I also noticed that most of my shots were taken with the lens out to 500mm. At that point I realized, I would be wiser to save my pennies and get a 500mm PRIME lens. (The Nikkor 500mm PF lens is only 3 lbs.)
By mid-2021, I bought the Nikkor 500mm PF lens. A relief to my elbow, better IQ, and I was amazed at how much faster the AF was!
So, based on my experience, I'd suggest, a beginner starts with a zoom, but if you're serious with your photo hobby, in a year or so, you may soon find good reasons to upgrade to a prime.
p.s. Before I got the 500mm PF lens, I upgraded to a D500 camera body, but that's another story.
