St Nicholaas did exist Santa is most likely father winter.
There's no need to buy presents instead you can DIY, make gifts yourself, play games, sing, dance, bake bread, cookies, invite those who need it. It all depends on you how you celebrate.
Greetings @wakeupkitty
I know he was the bishop of Mira or Myra, a town in Turkey ;^)
And yes, there's all kind of ways to celebrate it indeed but the magic of it sure disappeared when I grew older.
I still love life though and try to cherish each and every day.