I am retired from a long careeer in senior HR work, and have seen the vast number of people who trudge reluctantly to work every day because they have to rather then because they want to . I've had long periods like that as well, its the reality of life. Skilled work is precarious, automation and all that, sometimes poor management, but if its what you want to do, why not try? Is affording a BMW more important than enjoying every day at work?
One thing we are getting better at as a country is mid life career changes. Apprenticeships are no longer a boat that departs at 16 and once missed never comes back. Our local hospital is happy to train up people to all kinds of jobs - pharmacy dispensing assistant as an example, decent regular pay. So if you really want to do something, you can give it a go and retrain at say 25 if it doesn't work out.
A few things to think about. The obvious one is apprenticeships, there should be good advice from schools and colleges. Second is think laterally, what else uses the hands on skills. Restoration & repair is less likely to fall victim to automation, maybe look at a summer volunteering 'job' with National Trust or English Heritage if they do such things. What else uses wood? Son of a former colleage went off to be a boatbuillder, not heard of him for a long time but I know he was using his skills to make bespoke furniture as a side business. This may all be unrealistic but unless you ask you don't find out.
(Good with 3D thinking, if big and strong and head for heights maybe a scaffolder - from what I paid for some scaffold for a roofing job that looks like a well paid business to be in.
Hard work though)
Back in the 70's I was on a panel that interviewed 15/16 year olds for apprenticeships in a big engineering factory - we took on about 100 a year into our own first year school then they went out to the departments to specialize - millers, turners and so on. Its hard to find much to talk about to a 15 year old still at school, so we asked them to bring something they had made. You coudn't judge by quality because we knew the local schools all had very different facilities. But you could talk about it - why did you use brass for that bit? (teacher told me to vs it doesn't corrode) so why not all brass? (teacher told me to vs mild steel is cheaper if you made lots) and so on. It's unrealistic to expect a 15 year old to answer deeply technical questions, but anything which showed a spark of interest and understanding helps. So be curious, ask why as well as what and how, be able to explain yourself if you get a interview.