It is necessary to deal with the assembler, which one to choose?

Question

assembler

the essence is this - I read in the open that in order to "recycle" MMO games in the Russian way, so to speak, you need to know reverse engineering, cryptography and so on. I was very interested, but alas, I either didn’t filter out the information that was worthwhile, or simply didn’t. in general, I decided to try to study assembler, but I came across the fact that there are
a lot of gas, etc.

Answer 1

Modern compilers are so smart that it's better to write code in a higher level language (C/C++) as it will run much faster than your crooked handwritten assembler.
Learn C!