Suicide is definitely faster with guns. I wouldn’t call it easier. You can take yourself out quietly, cleanly and peacefully with stuff you can buy over the counter at any pharmacy on the planet.
No, before you ask, I won’t post specifics here on how to do it. If you are considering ending your life, please get help. If you are in a country that allows for medical euthanasia, please work with them rather than take your life on your own.