Help me decide what camera to get

I had a Nikon d3200 years ago and shot family parties and some live music. Sold it and got into film photography. And now wanting back in to the digital age. I mostly take photos of nature, my family, traveling, and I’d like video capabilities and I’d also like to get into Astrophotography. I’m looking at the Nikon d780, it is a bit more than I’m wanting to spend but will if it’s so worth it. I’ve never used mirror less. Was hoping to get something used including a lens or two for around 1000$. Seeing used with a lens on the d780 for closer in the 2k ranges.

I guess what I’m looking for is pretty beginner friendly but wanting that intermediate potential and quality. Something I can grow with rather than wanting a new one in some years. Im not a professional photographer and only shoot as a hobbyist. I’m not very familiar with what’s out there right now!