Hope you've already solved the problem by implementing Mr Vladimir's instruction.
If still not resolved then I would recommend you to watch: https://www.youtube.com/watch?v=Q2ldxwKF2ss
Make sure your profile is 100% completed. You might find FreelancerManual helpful: https://content-static.upwork.com/blog/uploads/sites/3/2016/06/10103934/16-0516-r1-FreelancerManual-...
Read some articles here which helps you for sure:
Lastly, take relevant test(which match your skills set) and qualify that brings you more chance to bid and win.