Can 冒険する translate as "to venture"? It's the closest verb I can think to use as "to venture". Specifically when using it in a context like To venture into... Is this correct? Or is there a better/more natural verb I could use? Thanks.

is a word that is associated with "real" adventures into the deep sea, outer space, etc., and the primarily translation of is "to have an adventure". Something like is perfectly fine. On the other hand, something like is understandable but usually sounds a bit too grandiose. Instead, you may want to say , , , etc.