Why is UCameraComponent not working?

Question

unreal engine

There is a ChessPawn class. It creates a Camera and a SpringArmComponent. But when the Play button is pressed, a CameraActor is created, from which the scene is viewed.

this->camera = this->CreateDefaultSubobject<UCameraComponent>(TEXT("Camera"));
this->springArm = this->CreateDefaultSubobject<USpringArmComponent>(TEXT("SpringArm"));
this->springArm->TargetArmLength = 8000;
this->SetRootComponent(this->springArm);
this->camera->SetupAttachment(this->springArm);

Answer 1

It turned out that I attached the camera incorrectly. It was necessary like this:

this->camera->SetupAttachment(this->springArm, USpringArmComponent::SocketName);

Answer 2

In my opinion, you just need to activate the camera when the player enters the game.