Halloween was a lot different when I was a kid in the 1940s and 50s.
Back then it was a holiday all kids could enjoy. Since Wicca and New Age religions weren’t around yet it had no religious connotations and only little kids really believed in witches and ghosts.
Most children either wore costumes made by their mothers, or cut holes in old bedsheets and pretended to be ghosts. All sheets were white back then, and it was usually easy to find an old one that could be spared. Store bought costumes were thin plastic and so cheaply made they would usually get torn before the evening was over, so nobody wore them if they could help it.
Trick or treating was perfectly safe. Only the tiniest kids without older siblings needed adults to go with them, and we ate the homemade treats people gave us without hesitation, often before we got home. We usually had enough candy left in our bags to last for weeks.
At the end of the evening we'd snuggle into bed with full tummies and happy memories of our adventures.