How can a train porter himself in all aspects of the porters?

I am a goalkeeper and I have no one to train and I train 1 on 1, angles and position, catching, diving, drilling, reaction. stopping the ball (diving and hitting back / tip the ball) corners, free kicks, penalties, footwork, crosses, handling back passes, passing, distribution, etc …

Could probably catch train for throwing a ball against a wall with old stones (you know what I mean? Those that stick out!) because that would create the ball to bounce at an angle of unpredictable. Most of them if you really immerse yourself in yourself. Why not join a team? Its easy and enjoyable.

Training free diving