It's a very green pong game, which mostly works. That last part isn't trivial, so it's a success from that point of view, and surely as a learning exercise. Good work! But to become an actual interesting game, that is worth playing for anyone else, it needs more. Some possible directions would be:
- Ball control, i.e. the ball bounces differently depending on where it hits the bat and how the bat is moving
- Different ball speeds depending on the same factors
- A more interesting control scheme, maybe with acceleration, or mouse control?
- A more interesting AI that follows the ball. Can you think of a way to make it more "human", where it tries to follow the ball and anticipate where it will land but is prone to making mistakes?
- And if you can pull of a varied AI, maybe different characters to play against?
- More visual variety... different color schemes, particles effects, post processing effects, the sky really is the limit...
Good luck on your game creation journey!