Im normally play pacman just to release my stress at work as that is really easy and fun games but yoy ask the technic for high score. You really taking serious to this game but sorry, I dint have the technic.
Pacman is a great game, there's no real strategy to the game so I can't really help you out with that. Just try avoiding the monsters lol, and get the cherries for extra points.
For me I would never eat the energy balls which allowed you to eat the men until I had most all of the other pellets cleared. That way once you ate them you could focus on eating the ghosts. You also have to make sure to wait until you can get all four at once.
I am not a master at the game but those are just my tips.