Religion hijacked holidays, enjoy any and all that you want.
If some people have an issue with it, it's a THEM problem.
Uk Halloween used to be a few ghost and witch stories. Then in 1972 I came back from the USA and introduced Trick or Treat locally, because when you're 8 and there are free sweets involved, who cares if I'm culturally appropriating from the Yanks :-)
I'm sorry to UK parents everywhere for what I unleashed. I was 8.