YANBU to hate it but YABU to think that any of the things are compulsory and it really gets a lot more bearable if you strip back as much as possible and do as little as you can.
If you have DC, obviously you need to get them gifts and do some other things that are really important to them - eg a tree? I really hate putting lights on the tree, so I bought a perfectly lovely, prelit artificial one, that makes it a lot easier.
Apart from your own DC, very few people actually need presents and most people will probably appreciate stepping off the gift exchange merry go round. So cut back hugely and where you feel you must get someone a present, just get them some wine or biscuits with the supermarket shop. Use gift bags to make the wrapping easier.
Don't even think about decoration themes or christmas day outfits. Why on earth would you? You don't even have to have a traditional Christmas dinner if you don't want one. Many people have other things like takeaway, buffet food, another favourite meal, or just a pared back, cut down, simplified but still enjoyable version.
Then just focus on things that you enjoy. Time off, TV, walks, hot chocolate, relaxing at home, go out to see lights, friends and family, whatever. But don't get trapped into feeling obliged to do every Christmas themed activity just because it exists. Because that's madness.