No Birthday or mothers day gift this year

I have been going through a bit of a bad time lately, i have been suffering from Anxiety due to covid restrictions like many other people, it got to a point where i didn't want to be in my own home so i went to stay with my daughter, while i was there my son called to see me on mothers day and gave me a card but no present like he usually does the week before it was my birthday he sent a card but no present he normally gets me something nice for mothers day and birthday last week i asked him if he had left my presents at he's house he said he was going to pick something up and bring it to my house but wasn't sure i would be there so didn't get me anything i have since met them for lunch but i paid for my own meal i thought they were taking me out for a birthday treat i got that wrong
i am feeling let down by him especially when i haven't been well he and he's partner have well paid jobs so they could have afforded it
i never forget theirs or my grand daughters birthday
in fact my grandaughters birthday is the same day as mine and when we went for lunch i gave her her birthday money which i love doing and would never stop
My daughter got me some lovely gifts i'm just puzzled as to why he thinks it's okay not to bother