MLB games aren't available on free-to-air TV, but there are still ways you can watch some of the 162-game season for free.
Apple TV Plus offers 2 games per week as part of its Friday Night Baseball double-header. The service comes with a 7-day free trial.
MLB.TV also offers a free game of the day. You will need to create a free MLB account and log with your MLB credentials in order to access the free game of the day.