Hi Mohamed and Fouzia,
One thing I want to tell you that validators are also testers. You can also be a validator once you crossed level 8 and above. Basically, the tester who crossed level 8 and above they will know what a client is required from the tester side. once you know that you will reach a good position in testing. Moreover, if validator does something particular in your bugs you can reach me out. will check and short out the issue.