@Gashlycrumb Most of the methods I’ve seen used to success were all OOC transparency techniques. Players would have OOC conversations prior to conflict scenes between their characters to coordinate the conflict. It was sort of like pro wrestling in that the scene would be somewhat planned out prior to it starting, but the ultimate end result was left up to the dice (or other mechanics depending on the actual system being used). In some cases, the OOC conversation led to one player deciding that this was definitely their character’s loss, and the entire thing was somewhat pre-planned. Also, in all cases, the end of the session included a decompression exercise so that everybody could properly deal with whatever bleed they might have.
One of the biggest first steps a game can take toward a more healthy CVC environment is to stop calling it PVP. PVP is for Rainbow Six Siege or League of Legends. CVC is one avenue where roleplay meets conflict. CVE is another (though, as an IT professional, referring to PVE as CVE causes me to double take because CVE is a special IT term). I only call it PVP if the story of the characters doesn’t matter at all.