You’re never too big to fail, bigger they are harder they fall, pride is more fatal than death, never say never, so on and so forth..... Ryanair could fail someday you just never know in this industry or life for that matter.
The salary at flybe may not be as much, but they cover everything like uniforms, training, hotels, flights, medical, PHI, LOLI.... If you work at ryanair you need fo factor in the possibility of renting and food if you are going to commute, by the time you factor that in, the FR salary may not look too good anymore!
You take whatever job you can get to get started in the industry, once you’re in, look very carefully at where you want to go in life and what your priorities are. You need to look at the whole package any potential job offers you, not just the headline salary or what the equipment is.