Is it difficult to recruit flight attendants? Is the probability of getting in through social recruitment lower than through school recruitment?

The difficulty is definitely there. Just talk about the number of people who participated in each interview. There are many people participating but few people are recruited. If you want to get an offer from an airline among so many people interviewing, It still takes more effort to learn it well. If you are 16cm tall, it is actually a bit dangerous, so you have to be better in other aspects, otherwise it will be really hard to stand out.