Welcome to the addiction, Br. What you are playing are CTTHs -Closest To The Hole competitions where you have one shot on each hole.
However, when your game browser opens you have several choices. You can play in the stroke tournaments, the pay to enter Ready Gos or way to the left on the menu you can play practice and ranked stroke rounds.
Look under the Single Player Game menu tab, pick one of the 3 stroke courses available (you'll know when you see the stroke option after selecting the course) and set up your own conditions or play a ranked round where the conditions are set according to your tier. Your average will be affected by playing and recording ranked stroke rounds.
You can also host your own game under Multiplayer Game or join one. GL