SFML Constantly moving sprite

Question

I have had a look at other posts and didn't really help, I was able to do movements with gravity for the player movements but I cannot seem to do it for constantly moving sprites which are being drawn by a vector. Any help welcome!

CLASS:

class fall {
private:
    sf::Sprite* fallSprite;
    sf::Vector2f movement;
public:
    float moveSpeed;
    float directionY;
    float x, y;
    fall(sf::Sprite* fallTex) {
        this->fallSprite = fallTex;
        y = 10;
        x = rand() % 1000;
        cout << "spawn fall" << endl;
    }
    void draw(sf::RenderWindow* window) {
        fallSprite->setPosition(x, y);
        window->draw(*fallSprite);
    }
    sf::FloatRect getRect() {
        return fallSprite->getGlobalBounds();
    }
    fall()
    {
        moveSpeed = 5;
        directionY = +10;
    }
    ~fall()
    {

    }
};

FUNCTION:

  void moveFall();
    {
        sat.fall.move(f.moveSpeed * f.directionY);
    }