Don’t say Merry Christmas to someone who is grieving

Everyone who is saying or texting Merry Christmas, or hope you have a wonderful day, I just want to say, do you seriously think it's a merry or good day? My dad just died a month ago. The people who have been through it, and get it, have told me to take care and I hope the day is as good as it can be. That's understanding.

I don't have it in me to even say Merry Christmas back. I'm just ignoring messages and will send a generic thanks hope you had a good one or some such tomorrow.

Anyone else on the same page??