this a naive and reductionist view of christianity. it was actually a quite revolutionary and radical movement. god himself became human and lost faith. as zizek puts it, christianity is the most athiestic religion.

jesus was a radical figure trying to kick the romans out of judea - which is why he got executed. he was against the organized religion and the power structures of the time. a few decades after, there was a jewish revolt and the jews controlled jerusalem for a few years. the Romans sent a large army, captured it, and decided to deal with the "jewish question" by making judiasm illegal and scattering the jews

paul, christianity's don draper, who wrote half the bible and the earliest works of the bible, came up with all sorts of fantastic stories (3 day resurrection, immaculate birth, etc) and modified the story to make it friendlier to roman gentiles (pontius pilate washed his hands in the bible and didn't want to kill jesus. in reality he killed thousands of jews a year. he wouldn't have given jesus a second thought)

so christianity went from a jewish cult to a fast-growing religion and that spread across the empire until eventually Constantine himself converted

christianity is the story of the tenacity of the jewish people and the soft power they managed to propagate throughout the empire even after the empire tried to stamp them out. it's the story of a small desert people conquering the roman empire against all odds

you reduce it so something so simplistic and naive and it's sad. people should learn the full story.