Don't give up on something you are passionate about. Try and work a little extra time to save the monies to fulfil your dream. It may take a little longer but in the long run will be worth the while.
First and foremost, if you're interested to be a flight attendant, you need to be able to swim. There are courses that are being offered by the airline towards improving your skills to do the job excellently.
I suggest you look out for any tourism learneship program that is offered by the government online that way you can be exposed to the industry and gain more chances to be employed by traveling and tourism companies