Prayer is just possibly the most powerful thing you can do in working with your deities. No matter the name, number, or gender, deities like to receive prayer, and they do respond.
Prayer can be corporate, such as in a group. But it can also be alone, sometimes solitary and sometimes even absolutely secret. And, of course, what you pray is between you and your deity, and nobody else.
The only thing left to consider is what you are praying for or about. There are indeed some lines you don't want to cross. But, there are ways to bring about what you need. Never forget that your deity's will is your happiness and well-being.