Trying to hire a digital marketing expert. So many out there. What questions should I ask?

I own my own wealth management firm (recently launched) and I’m trying to find a way to build my presence in the area.

I have no experience in marketing, only sales, so I don’t really think I should try to figure it out and likely fuck up royally (waste time/money).

Wondering what to ask/where to look to find the right expert?

Digital marketing agency in darbhanga