Zoom Lens

I'm sorry that it's a squirrel again. I just wanted to use a zoom lens, kit lens, to take a zoomed in photo of a squirrel this time, I used FFL yesterday. I took a satisfying photo today anyway. But I want another lens, particularly prime lens which has a focal length much longer than one I have already. I decided to earn and save money in order to buy this better lens. However, the better quality, the more expensive the equipment is. Sigh.