They're not 'really bad' photos, no. As far as the sport, I assume this is what in North America is known as 'cutting', that is separating one animal from a herd for branding, medicating or slaughter?
The main area where these images are lacking, IMO, is in the backgrounds. You've used a small enough aperture that there's sufficient DoF to render most of the scene in focus, and as invariably happens, there's a lot of stuff going on in the background. Try and use much larger apertures and longer focal lengths; this will allow you to isolate the subject from the background more effectively.