Trip to Georgia cancelled last minute and I don't know what to do

I was supposed to fly this Sunday for a week-long trip to Georgia and meet my family there. They were flying in from Thailand and we planned a hiking trip + nature trip together.

Unfortunately, their flights got cancelled because of the situation in the Middle East. They were able to get a refund, but my brother and sister-in-law don’t have any more days off this year, so the trip is basically cancelled.

The problem is that my flight is still on and it’s non-refundable. My dad already paid for the Airbnbs too, and he asked if I still want to go. He isn't able to get a refund in the first place but can be in other places.

But honestly, I don’t. This was meant to be a family trip and I don’t feel comfortable hiking alone there. At the same time, it feels awful to waste the ticket and lose the holiday entirely.

So now I’m just stuck feeling really disappointed. I was really looking forward to spending time with my family. Another reason of the hesitation is because this was supposed to be a family trip, I wouldn't feel great going alone, and I would probably miss them too much. It wouldn't be as fun.

Not sure if I should still go and try to make something out of it, or just accept the loss and stay home.

Has anyone been in a similar situation?