Best job for non university educated young Australians?

Wondering what the best entry level or short course / licenced jobs are?

Not just about most paying relative to effort, but considering how fast you can actually get a job in said role. Both from the time it takes to get certified or licenced if needed and the demand for the role in that industry.

For example, security licences can be as cheap as $1500 all up with only a week course. But there’s often only 20-50 job opportunities for full time work in most Australian cities.

Whereas forklift driving is similar pay for a cheaper course with double or triple the job demand.

Thoughts on what you’d recommend?