I do believe there are people that would do things selfishly. Love, unconditional, is real.

Though I can understand the frustration with active manipulation. You have spent a long time trying to move the pieces on the board, hence you view everyone that way. Perhaps the way to stop is start by acknowledging these thoughts even if you act on them or not. You won't always be successful at changing your nature, but step by step you might see change over time.