I haven't ever worked for Ryanair but flew with a few who have. Essentially, they viewed Ryanair as a place to get plenty of hours and experience quickly, get that EASA ATPL "unfrozen", and then get out. They were all very good pilots and a pleasure to fly with. So I'd say their selection and training process is sound.
You pretty much cannot join NJE without having a minimum of 1500 hours. So you need to get them somewhere.
I was in NetJets Europe for 20 years and the time literally flew by. I am now cheerfully sitting on the beach in Australia in retirement. For me, NJE was the perfect fit. I doubt I could have done 20 years in an airline. My husband worked for easyJet for 22 years. He wanted to swap with me, I didn't want to swap with him.
(He's sitting on the beach too).
At 24, you have the world at your feet. If I were you, I'd grab an airline job with Ryanair or easyJet (or any other reputable airline with a good solid training department) and do that for a few years. Decide if that's the direction you want to go or look around. Get command while getting the applications in.
A very good friend in Qantas gave me this great piece of advice. Always start looking for the next job while you're still happy in the current one.
Good luck.