It hates me 🥺 What do I do?

I received this as a condolence gift after my father passed away last year. I do not have a green thumb. It was beautiful when I got it and now the leaves are browning on the edges.

I’m worried that I overwatered it? Also, we just left town for five days and left the heat at 60°, so maybe it got cold?

It gets watered maybe once a week .

It lives on a bookcase across the room from windows and does get direct some night every day. Not all day long, but at least least one hour, and then a lot of indirect light.