An example of maybe used as an adverb is stating what someone might do; "She will maybe go to the pool tomorrow."
There are so many maybes involved in playing the stock market.
We should maybe take a different route. Maybe it won't rain.
It's better to receive a fast and honest no than a drawn-out maybe.
The results of the poll were inconclusive. We got two yeses, three nos, and four maybes.