The movement concerning a look of the character

Hi, everybody. Recently began to study UE4 therefore strongly don’t swear.
Who has versions of the solution of this problem? Attached video.

Thanks in advance for answers.

As I have understood, now at me animation is based on the direction of pressing of a key, and I have to change it to position of a mouse. Hasn’t found yet as to make it.

your problem is caused because your Animation Blend shouldn’t be based under “Right” and “Forward” but under speed and rotation, it’s not hard to figure out how to do it by yourself, but in case you want a better tutorial try this one - YouTube
i recommend you to follow the entire Twin Stick Shooter serie, but this single video may help you for now.