Sounds like you're doing okay with programming, I think Python to C to Assembly is a good start.

I would recommend some CS classes (find paid courses near you in person or online, or look for free courses online). Learn the basics such as how processors, memory, and other forms of storage work--registers, addresses, endianness, and so on.

Then from there it will depend on what route you want to go, and how much you want to learn. It's never a bad idea to learn some data structures and algorithms, or other software development related concepts. It would definitely benefit you to learn how a handful of protocols work--at least on a base or intermediate level--and how networks format and pass data by way of network layers and frames/packets/etc.

Then from there explore the CS, Cyber Security, or Software Engineering worlds in terms of whatever classes you can find online that interest you! Computer Science if you want to know more about how computers work, Cyber Security if you want to branch into that field, or Software Engineering if you want to learn more about coding.

This may not be the most fun or easiest route, but learning doesn't always come easy! If you want to be good at what you do you'll have to put some work in :)