Jesus' birth? Real event, probably, but are we dscussing the Judaean Zealot rebel or the Galilean Essene preacher?

Resurrection? As a vampire or a Zombie?Not a real event, but a made-up story.

The God born in a cave at Midwinter was Mithras.

The Easter Bunny is a cutesification of the Spring Hare, sacred to the Goddess.

Santa is the last, miserable, bastardised, commercialised remnant of the Winter King, sacrificed at the Midwinter Solstice so that his blood would revive the fading Sun.

All much older than your politically-skewed mishmash of Mediterranean vegetation cult, Judaic monotheism and misinterpreted Stoicism. No religion that does not have a Mother at the core is a proper one, just another post Patriarchal power-grab.