Generally speaking people may be unemployed because they either weren't selected for interviews or failed the assessments, there could be a number of reasons whether its a poor cv, having a bad day, lacking technical knowledge, or maybe just not clicking with the interviewers. I`ve had numerous failed applications and some successful ones, I initially signed for the 737 operator and got a type rating start date before they cancelled all type ratings for the rest of the year- nothing is guaranteed. I just applied for the jobs, network by speaking to people already at those operators and get their advice before interviews etc. Go modular but budget carefully as you can easily overspend.