In short, no. Attempting to get a "free account" from a third-party site in 2021 (or today) is far more likely to result in a hacked computer or a banned Steam profile than a successful ghost hunt. The safest way to experience the paranormal thrills of Phasmophobia is to purchase it directly from the Steam Store or an authorized retailer.
: If a friend owns the game, they can authorize your computer to play it for free via Family Library Sharing (as long as they aren't playing a game at the same time). Free Steam Account With Phasmophobia 2021
"Free" game installers or account managers often bundle spyware or ransomware. Get a Free Steam Account with Phasmophobia 2021: