Anything you have been able to demonstrate throughout your degree, such as involvement in extra-curricular activities, part-time work, and community affairs matters equally if not more than your final marks, depending on your circumstances. Any projects you might have worked on, such as software you have released to the public, is a major bonus.
Employers want to hire individuals who are likely to stick around, and I recommend taking the approach that you intend to stick around. In a competitive job market, showing both commitment and determination is comforting for employers when they decide to hire individuals.
If you are really excited about a particular company, research about them, attend their open days, if any, and contact their recruitment team and see what you can do to learn more about them. Your potential work ethic and ability in the professional workplace is not and should not be determined strictly by your marks, so maintain confidence and work with what you have.