Morning....
Just picking up one some thoughts expressed about whether aircraft landing or not was in some ways down to feelz, confidence, new pilots etc...it doesn't really work like that.
Your aircraft comes with a published crosswind limit (actually several depending on runway being wet or dry or other factors..)..typically it's around 40 knots but it varies between aircraft type. For aircraft like the 737 vs. A320 vs. 777 may well all be significantly different, indeed it can even be different between variants of the same type. Those limits are set in stone, you can't "have a go" if the wind is outside your aircraft's limits just because you think you're an ace or are feeling particularly confident.
New pilots get a lot of training in crosswind landings....
Nights like last night as you approach destination you're getting wind info from ATC..if it's within your aircraft's limits you'll probably make an attempt, if it is outside limits you won't..that's one reason why you might see some types landing at an airport but others holding and not making an approach.
As for number of approaches, usually two max but whatever you do you have to keep fuel in hand for a diversion to wherever you plan to go to (Cologne!!!)and you also have to be aware of duty hours limits so maybe can't hang around waiting for a lull in the wind, it's possible you might only have fuel/duty time available to make one approach and if it fails you're off to an alternate.
As for some of the comments about Ryanair , profits, safety etc, the usual comment from me - you can hate them for their employee T&Cs , you can hate them for their customer service, but their safety record is absolutely solid (and no, I never worked for them).
HTH