On the other hand full frame lenses tend to be expensive so unless you plan to upgrade to a full frame camera, you’re better off buying a cropped frame lens.
Note that the focal length of a lens doesn’t change regardless of the camera you put it on. The effect you see is cropping, not a change in focal length. On an APS-C frame camera, the image you end up with from something around 35mm would be closest to a 50mm lens on a full frame digi or, dare I say, the original full frame camera shooting 35mm film. This is closest to your own field of vision.
Keen photographers tend to fall either into 35mm or 50mm camps when it comes to prime lens choice for street or general photography. I use 35mm but I’m a rank amateur and I tend to rely on the high pixel count to then facilitate cropping, down to what you would otherwise get with a 50mm focal length. Probably I should be in the 50mm camp but the camera I have/wanted is 35mm fixed only.
For an APS-C camera, I’d suggest looking at something around 25-35mm in focal length.