Don't let the lack of VRChat keep you from socializing in VR. PS4 owners have access to some fantastic alternatives that offer similar social experiences:
While not strictly a social chat room, Media Molecule’s Dreams allows you to explore thousands of user-made VR worlds, many of which are designed for social interaction. vr-chat-ps4
While the official VRChat support page lists compatibility for SteamVR, Meta Quest, iOS, and Android, Sony's consoles remain unsupported. Several factors contribute to this: Don't let the lack of VRChat keep you from socializing in VR