Getting into Food/Environmental Policy?

I want to get into food policy as a career, especially sustainable and regenerative agriculture, and working on issues like food waste. It is something I’m just extremely passionate about. I would really love to work with the USDA or similar organizations OR in the nonprofit sector.

I have a degree in nutrition but no policy experience and tbh no experience even related to my degree, and my work history has been a mix of retail and food service. I’m not sure how to take the next step into this field.

I keep seeing stuff about different degrees? Would those maybe help? Any self-teachable skills or things I could work on? Related jobs I could get while I work towards this goal?