Only you know the layout of your site. Arrows can help your user click the right button to go to the next step —don't be afraid to use them!
Not just on the home page, use Call To Actions for every page of your site
The Call to Action doesn't need to be the same for every page, but they mom database should extend beyond the home page. Each page should have some type of button, but make sure they remain consistent and have clear objectives.
Create a communicative tone and personality for your Call to Actions
Again, this depends on your goals and the personalities and interests of your users. Take these examples into account and adapt them to your own call-to-action strategy:
An urgent tone lets your user know that if they don't take a certain offer or take action, they may miss out on the benefit or product.
Using an attractive and irresistible tone will make your user give in and buy or acquire what you are selling, because they will get something extra or some specific advantage.