Instead of using a "free account" from a stranger, use the official Steam Families feature to share the game with people you trust: Steam Families User Guide & FAQ
Q: Is it safe to get a free Steam account with Phasmophobia? A: As long as you follow the methods outlined in this article and prioritize account security, it's relatively safe to get a free Steam account with Phasmophobia. Free Steam Account With Phasmophobia