Getting a good job is very difficult for young veterinary graduates without experience as there are more competitors nowadays. My advice is to beef up your experience by working in smaller clinics. Hard work and contribution to your industry take up a lot of personal time e.g. charity work. There is long hours of work too.
There will be graduates who have good connections and network from their parents and friends. They are fortunate. During interviews with prospective employers, you will get no or negative feedback. Look at negative feedbacks as learning experiences, rather than be discouraged.