Another generic betrayal isekai story (full title in summery)

Full title is:After being reincarnated to another world to fight against the hordes of evil, the generic fantasy human kingdom tried to betray my ass but I betrayed them first, thus causing a coup and civil war!

You know the drill, brainrot incoming.I been playing too much AoE3 these days, so the battles in this story will be on a much smaller scale.​