After purchasing Player Cam from the shop, try cursor lock on the goalkeeper and play from 4 to 6 stars. Note: 6 stars is unlockable by buying it from the shop. 4 to 6 stars results in more penalties in game. A PK shootout works as follows. If the PK taker is shooting the ball to the striker's right side, you will control the keeper to save the shot by pressing the Left Analog-stick Right as well. However, if you are in an actual game and are locked on, the goalkeeper in Player Cam, once the striker starts the run up and the camera returns to Player Cam if the striker is shooting to the keeper's left side, press the Left Analog-stick in the opposite direction to the dive. For example, if you want to dive to the left in a game, press the Left Analog-stick Right.
In Edit mode, increase all of the abilities of the players that you want for your team. After this, go to Master League mode and select the option "Create Custom Team". Edit everything desired until you get to the default players list, then choose every one of the default players individually, and change them to the players that you edited before. You will start the league with a very low budget, but your team's budget will become stable after you win many matches. It will be easier to do this because your team now has perfect abilities.
Start a new International League mode and reduce the number of teams to three and the duration to half. Win the first match, save the game, and win the final match. You will receive a prize of 3,000 PES. When the league menu appears, load your game and win again as many times as desired. You will get 3,000 PES as a reward for each victory.