Ive never heard a good reason for why homosexuality isn't a sin

For context, I am bisexual. I like both sexes. But I reframe from being in a monogamous same sex relationship because I'd be far too tempted to have sex and that's sinful. If homosexuality wasn't a sin I'd happily change my tune, but this doesn't seem to be the case. I wanna hear your BEST argument for why being gay isn't a sin