I know that Thanksgiving has now since passed but Christmas is on the way. I have a few suggestions:

Firstly, I think it very important that you celebrate the holidays on your own terms. This means making new traditions. Would inviting someone to spend time with you be difficult? You need not put on a dinner but what about candy canes and hot cocoa one night.

Can you volunteer for an organisation or event? I volunteered for years at my local museum's two week long tree festival. I got to meet some very nice people and at the end of it all we had a very nice gathering to celebrate. I also volunteered for the local food bank preparing and handing out hampers (it just so happened I needed one myself).

You need not be alone. You can be in control of your holidays.