what is the best way to get a job? i tried as a custodial officer but they said i was too skinny and young to get awarded the job but on the vacancy it said you have to be 18 or over and no qualification requirements needed

This is the place to look for a decent and a well-compensated job with no qualification requirements and money needed. All you just need is your time, patience and of course, you have to follow the rules impose in this forum.
Indeed. Doing service in this forum is really profitable, especially if you have a good rank. But I think, being employed with a sure salary is not a bad idea. Be patient. If they rejected you, then try again. Don't lose hope. You'll gonna get a job.