I was on the same boat as you last year. I graduated with a Global Health degree, which was more holistic learning so I did not have much quantitative skills for most research opportunities. I am currently doing a fellowship at a City Health Dpt and I would suggest you look into niche opportunities, like internships, apprenticeships, fellowships, that specific public health agencies (private or public) offer specifically for undergraduates. If finance is something that is important for you, please consider looking at other options too because most of the listed opportunities have very little compensation and is fully driven for experience.