You can watch some youtube videos along with the app course.
This is a nice playlist, it covers all basic concepts of C++ in short videos. Its better to watch 50 short videos than one 9hour long video. Once your basics are clear then you will not face any problem and you will say that C++ is the easiest.
Believe me I did the same and now am good not only with C++ but also JS, CSS and Py.
After you complete the course then you might be interested in either backend or game development or any other work.
Just google that thing and take a course from https://www.udemy.com
It is a very good website having lots of courses with lifetime access, free courses are also available.