We never pushed Santa.
I'm Christian and so we explained Christmas in terms of the nativity.
Lots of our Christmas build up is focused either Church or family stuff: the Sunday School nativity play, singing carols, going to the Christingle service, decorating the tree, helping out with baking and preparing the house for visitors. We have also taken them to donate to the Christmas Eve food bank collection every year so that they understand that we are very very lucky. Our Church has a gift service early in December collecting gifts for children who wouldn't otherwise get anything and the children are involved in selecting and wrapping things for that.
We never told them about Santa they just kind of learned by osmosis.
We didn't say it wasn't true though.
When they went to playgroup aged 2 they were told about leaving mince pies and carrots out and asked to do that so we did. We also put out stockings the night before.
My absolute line in the sand was no telling the DC that if they were naughty Santa won't come. It's not true, Santa will come regardless of how dreadful you are on Christmas Eve. (I hate that creepy, hypocritical Elf in the Shelf)
I have also avoided chocolate advent calendars. I have a lovely wooden one and we do that instead.
Because we keep Christmas quite low key our kids have never done the so excited they are climbing the walls and throwing up thing we often see with friends and family.
They know they are getting presents, and are going to have a lovely time with family so there's less stress.
My DC have never been to a Santa's grotto or breakfast with Santa. Both of which seem to involve lots of expense queuing and bored/stressed kids and adults.
They obviously see Santa at Christmas parties though.
My DC asked at 5 yo whether Santa was real and I told them the truth. They weren't upset and Christnas has continued to be just as wonderful as it ever was.
I have a concern that people get very very stressed about producing "magical" Facebook perfect Christmases for their children which seem to focus on highly consumerist stuff that isn't important.
Post Christmas MN is a very depressing place full of women who have exhausted or bankrupted themselves trying to create perfect Christmas for ungrateful disinterested families and lazy partners.
Choose whatever version of Christmas works for your family OP. I think we have a good balance. Christmas is fun, and warm and loving and never stressful or disappointing.