Edit the container containing your button and the two headlines. Go to Container > Setup > Flex Layout and set Horizontal to Start.
There's no option to change the position in the button itself. The Header and Footer builders uses Flexbox. If you learn how to use Flexbox, you'll know how to lay things out in the builders. Please see our Knowledge Base for Pro usage tutorials and tips and tricks.
The text aligment option is for the text within the button. Provided you set a specific width for the button and you don't have side paddings, it will look like this.