I don't think that there IS a single or even a multiple solution as a lot of the causes are out of our hands realistically.
DP & I have 3 DC between us and only 1 is working full time. One works, one is looking for work after being a carer and the youngest has a medical condition that is lifelong & impacts daily. They're also ND with anxiety + depression and are truly NEET by age and definition.
When I left school in the 80's I went to college and got a weekend job. University wasn't possible for me so I got a good job when I left that I stayed in for 20 years. I bought my first flat at 19 and graduated up to a house when I needed it. My secondary school (400 pupils) recognised that a lot of kids weren't academically gifted and prepared them for a work life. We had a proper forge, woodwork/electrics/mechanics/sewing/home economics classrooms and we were prepared for adult life. I went to college to do A-levels but some of my friends went to learn car mechanics, building skills or office/admin skills. Some went onto the YTS and some went into accountancy, building or retail management through it. The opportunities were huge if you wanted them. So what happened? The YTS was roundly derided and yes, some employers took the piss but skills were taught by the majority that a young adult could use. My brother went to college to learn catering and then did a YTS in tiling/plastering and has consistently used these skills since and has never been out of work. And yet schemes like the YTS were seen as only for the stupid or for wasters and with the drive for university education, it all slipped away. Our local secondary school doesn't even do work experience anymore and the academically excellent college actively discourages weekend jobs as it eats into study time (yep really).
So why do we have the NEET issue?
SEND provision is seen as weak and pandering. Schools fail to recognise that quiet, compliant pupils need support as in my experience it is an endurance battle for a lot of them to just get through the day. Only one of my DC got proper provision for their needs at secondary school...and yep, that's the DC who is working.
Secondaries are simply too big - our local one is nearly 2000 pupils. The brilliantly academic and the troublesome pupils get all the attention and the quietly enduring 80% in the middle get nothing. All of my DC found it difficult to engage and felt overwhelmed.
Secondary schools and colleges only focus on the academic education rather than a more practical approach to those who can't achieve grades. None of our local colleges provide practical skills other than Early Years and one provides beauty/well being courses. There are no longer evening classes in cooking, car mechanics etc and the range of academic classes have narrowed to maths and english.
The NMW is an excellent idea but why now pay the same rate to a 21yr old as some one who is in their 30's. It used to be a gradual increase as you got older. Employers will now always choose age/experience if they have to pay them the same £12.71ph rather than give a youngster a chance.
What is there to aim for? You get a job but you can't buy a house or even rent one. Prices and rentals are too high for most. None of my DC can afford to buy/rent and be able to live day to day. Your average young person is looking at living in their childhood bedroom until their 30's.
You want to drive but lessons cost more than buying an actual car so it's becoming prohibitively expensive. It's actually cheaper to buy a banger and teach the DC yourself and then pay for a short course of lessons before they take their test. I think a lot of young people just think what's the point of even trying when it's not going to get me anywhere? It's easier to hide at home, in your room, gaming+ scrolling.
Social media, gaming and the internet. Nothing to add so will just drop that one there.
Expectations. One of my friend's DC walked out of a job because he didn't like being told what to do and mostly being directed to actually do the job he was employed to do. He's now got an apprenticeship and even before he's started he's saying to all that will listen that he's 'not gonna be ordered about by a nobody'. Another would regularly come home 'upset' because their boss wouldn't implement any of the changes they suggested and walked out eventually. Another thought that start times were optional and if you were bored then you should be able to go home (oddly enough let go for poor time keeping).
On the other hand employers want more work for their buck. Employers want ridiculous amounts of flexibility on shifts which in some cases are just not workable for some - retail is particularly bad for this.
Lack of proper support. I've been trying for months to get support for youngest DC. We're still waiting for the job centre and a 'social providers' scheme (no, no idea what that is either) to get back to us. They need support to live and to get a job but it's just not happening. DC has PIP for their long term illness (which has daily impact and will eventually end in death by 60) and with their AuADHD issues needs support. They want to work but currently can't do full time - their GP & consultant agrees. DC will now be forced to claim UC which they've been trying to avoid because of the stigma attached to that. They have until recently been volunteering in a charity shop for a few afternoons and have looked for other volunteering positions but there are waiting lists. A lot of NEETs or college leavers are volunteering to work a few hours in a charity shop for work experience so the wait can be long.
There are few work schemes available unless you can get the jobcentre to find you one. There are few 'skills' based schemes and none at all in our area. Something like the YTS would be perfect for oldest DC (when he would have qualified as too old now) and with support the youngest could do something like it.
I feel so desperately sad for today's kids. Yes, some don't want to work but there's always been some like that. They just seem so...lost and afraid. I don't think covid caused it but I think it made it worse. We as a society forget that young people need to be moulded into adults - they don't just appear!