Is it worth it to go back into education/vocational training at the age of 32?

I got inspired to this post by a post below where people are living on minimum wage jobs specially in London.
So I am about to hit 32.
I have had a rough journey of minimum-salary jobs and Restaurant Management jobs. I got tired of them because there was no money in them. I couldn't save a single Pound.
I am looking for a career path change.
I was a CS dropout after my dad passed away.
And I keep getting these ads for Cyber Security courses with jobs letting you earn up to 65K Pounds. Ofc the reality is I would be earning only up to 40K or 50K.
Are they like that? Or is it just deceptive advertising?
If it is real what's the best way to start a career path to it?
Also, is this something I could do till the age of around 45ish?
And what are the career prospects abroad like in America? I heard they are better there but heart and family remain in England.