I would like to start by saying that I am a big believer that coding is not for everyone. It is popular and there is definitely plenty of job opportunities out there, but if it's not your thing and you have difficulty learning, maybe another career path is best.

As for LAMP vs MEAN, I would say in general LAMP is taught before MEAN for a number of reasons such as being well known longer, fewer steps to get up and running, and a general agreed upon consensus that it is good for beginners.

That all being said, I don't want to discourage you from learning. It could just be that you need to be taught a different way. I have taught a number of programming languages if you want to hop on a call and dive more into your specific case.

Hope that helps :)