How tf do I shave without getting ingrown hairs😩

I feel as if I’ve done everything and every trick possible to make it so my downstairs doesn’t grow back through with a heap of ingrown hair and they all never work! Every time my hair down there grows back it’s all gross and sore with those weird pimple looking things.... Are these ingrown hairs to begin with? How do I shave without getting them?! I really need answers😩