I had a 5 year banin republic of  ireland due to fake job offer letter  and fake work permit  the agent gave me to submit  when I went for biometrics and now I have a certificate  of sponsorship (cos) to work as a health  care assistant  in the uk  a friend  told me that it is impossible  to get a visa because  of the ban although  I have not started  applying  for the visa but I hope to tell them the truth what chance do I have please  help.