Dry beans need to be cooked. Soaking is sorta optional, but you'll have to cook them for way longer if you don't. You need to bring them to a hard boil for a few minutes before reducing them to a simmer.
Kidney beans and their close relatives need special care because they have a higher amount of toxins. You need to have them on a hard boil for at least 10 minutes before reducing them to a simmer.
Alternatively you can just do what I do, skip the soaking, and throw the dry beans and water into an instant pot or other pressure cooker. I usually set it for 40 minutes of high pressure and wait for it to naturally release.
I usually like to cook my beans with a bit of celery, carrot, onion, garlic, salt, pepper, bay leaf, cumin, oregano, cayenne, and a splash of olive oil. The stock at the end is pretty great, too.