Apparently, you don't need any of these beginner courses, which for some reason 95% of all the educational content. Just don't waste your time, anyway like half of them start from teaching C.
There's a course on Coursera exactly for professionals like you. Apparently I did not try it, but I believe Coursera simply do not offer low quality content, which us normal for platforms like Udemy.
https://www.coursera.org/learn/c-plus-plus-a
Next sourse of information is CppReference. When you get to know about new for you C++ feature, find an article on CppReference, it would provide enough information for comprehensive understanding
https://en.cppreference.com/w/