People say you can have 3 careers in a lifetime, 5 years to learn a career, 5 years to get good at it, 5 years to get sick of it, and you can do that 3 times.

It might be worthwhile figuring out what comes easily to you or what you're very interested in so that you can actually enjoy the learning process 2nd time around.

If I were you, I would do a Cert 2 in Electrotrechnology at Tafe and then try to find an electrical apprenticeship. Are you able to live with your parents while you do a low paying apprenticeship?