Who told you that you can not be a valid candidate for Ryanair? That's real BS. Yes, they look at exam results but they also look at the bigger picture. And this applies to many other operators, not only Ryanair. Age might play a part, maybe not. I personally know at least three guys that were over 35 when they joined Ryanair. This was pre-Covid.
You need to get your MCC. Maybe an APS-MCC.