Programming

I just searched online and was taken aback by the lack of content I could find , there are millions of video for different small niche things by hundred of people which are right and wrong about things but the most I could even find about how chips are made today are the ones explaining how silicon works etc. LTT is the only one which even have a factory video and it is too very censored uninformative and useless for my questions .

1 - I get that light is flashed in binary to code chips but how does it actually fookin work ? What is the machine emmiting this light made up of ? How does this flashing light hold as data forever on chip ?

2 - How was program's, OSs, Kernal etc loaded on CPU in early days when there were no additional computers to feed it those like today ?

3 - I get internet is light storing information but how ? Fookin HOW ?

4 - How did it all come to be like it is today and ist it possible for one human to even learn how it all works or are we just limited one or two things ? Like cab we only know how to program or how to make hardware but not both or all ?

5 - Do we have to join Intel first or something to learn how most of the things work lol ? Cause the info available online about the software, hardware, skills etc is shit ? Not even RISC-V documentary are available .

Context - Just started learning python and got philosophical to how all things came to be ? Is just making apps or websites even a thing worth learning in the grand scheme of things ? I get that some people is just okay with that but come on have you never thought about how the deep you can go ?

anyway feel free to tell me to stfu and I'm sorry if sub=wrong and will move on request . And as the username suggest I'll be posting questions as I have them and thanks.

ALSO ELI5 everything please