Train for something which separates you from the untrained.
Something like installing air-con would do.
What do you like doing, what do you hate doing, what are you good at, what are you bad at?
What do you find easy that others struggle with? Have you done anything technical you can build on?
Something I've seen Poms do is get to Australia and work in the mines. if you're the sort who could get happy working with a gang of blokes. Something like a form-worker ( knocking up the woodwork to contain concrete) pays incredibly well because you're flown in (and out, FIFO working) and away from any family for months. It's been a while since I was there but AI says entry level labourers now earn into 6 figures. It's not for everyone. 12 hour days etc, living in a sort of resort with lots of facilities. Diesel fitters, double that but you'd have to get residency first. An HGV licence can open doors.
I knew a woman who was driving transport buses at over £100k a year, 20 yrs ago. They preferred women for that. Illicit booze was a problem with lary men.
She was at the end of a stint, 2 years I think, with enough cash to sort her life out for something she really wanted to do.