Several career websites are out there to assist you with finding a job. Your university careers centre is a good place to start but also have a look at general job search websites and government sites including those targeting graduates like:
In addition, don’t forget that your degree is giving you skills that can be applied to several sectors, not just those within the field of criminology. Think also about people who inspire you and see if you can find web content of their talks to inspire you and get you thinking about possibilities.