Welcome to the forum.
No need to feel guilty. Asian Buddhists will pray to all kinds of Gods for help! We Buddhists are pantheists in a sense. If you have a good, working relationship with some deity, you’re welcome, encouraged even, to keep it up after converting. In AN 5.58, for example, the Buddha encourages wealthy householders to give offerings to the deities. And in MN 56, the Buddha even encourages Upali to continue to support other ascetics after converting.
As Buddhism spread across Asia, its adaptability to existing cults and local gods and practices was key to its success.