The best courses related to programming languages to learn cybersecurity.

python :)

Python for scripting, C and ASM for reverse engineering and exploiting, everything else is blasphemy

I'll agree with other posts here but i'll add SQL that is good to know for hacking

python

c++ old and the best powerful language
second phyton

ASM and/or C for reverse engineering. C++ for finding bugs / problems in the source code.

ASM
C
C++
Golang
NIM

Python
Javascript

systemctl start breached

Off the top of my head there is no best but my opinion below

python
- requests/urllib/selenium for web hacking
- socket for low level network hacking
- pyautogui for hacky automations
- flask hacking token signing

c#
- unity game hacking
- dll hijacking/injection
- dnspy reversing

c++
- reversing/memory hacks
- unreal engine hacking

asm(arcetecture dependant)
- machine code for reversing and super low level shit

ruby
- metasploit module development

http/css/js
- the language of the browser and some backends can use js

sql
- databases, if you wanna hax em then you should know how to enumerate after you find the sqli

bash(or any linux shell)/powershell/vim/git
- the foundation for all above

last but not least learn to be flexible with any cli tool and read the docs.

prob missing a few but as a green pentester thats what i got under my belt

edit: shoot forgot courses to learn! youtube, pluralsight, this mobile app call sololearn, the actual official site for the language is a good start too.

I think it's assembly. First of all, you need to learn reverse. Network security must learn assembly language. Second, minor in Python.