I’ve seen several posts of people asking for advice on situations like this with so many answers suggesting OP to fight back, document and contact the union, but this seems too much work for an unconvincing result, because there is no way a manager is going to fire an employee or a clique for a “he claims she claims” situation.
Manager, employer, even the union, will listen to you, play theatrics and change nothing hoping you forget.
Walking away, while making you feel like a loser, seems to be the sane choice long term. Cliques are gonna clique.
Maybe you can think of a better way?
Fighting back, documenting and contacting the union usually doesnt work the first time but each time theres another incidence of something that could be considered inappropriate behavior the pressure mounts in your favor.
HR is there to protect the company, but once you can show a pattern HR is there to protect the company Once the cost of you potentially suing for them failing in their duty of care to protect you from workplace bullying and harassment is more than the cost of replacing the assholes doing it then they will act.
The biggest issue is with this that nobody is perfect, and you biting back one time or giving them anything to complain about you to management puts you back at square one.