Check your memes.

Jesus isn’t based on Horus mythology
coldcasechristianity.com/writings/is-jesus-simply-a-retelling-of-the-horus-myth/

Jesus isn’t based on Mithras
coldcasechristianity.com/writings/is-jesus-simply-a-retelling-of-the-mithras-mythology/

Easter isn’t based on a pagan holiday or the worship of a goddess.
christandpopculture.com/no-easter-isnt-pagan-either-a-very-d-list-saints-holiday-sequel-the-gritty-reboot/
www.christianitytoday.com/history/2009/april/was-easter-borrowed-from-pagan-holiday.html

Christmas didn’t co-opt Saturnalia or Sol Invictus
christandpopculture.com/no-christmas-isnt-secretly-pagan-merry-d-list-saints-christmas-special-whole-family/