first off.. attempting suicide is a risk. If there is a 100% foolproof way for the average person to commit suicide then I'm yet to hear about it.( And I have researched different methods for decades). I know SN is a highly sought out method by many on this site but it seems to be pretty difficult to acquire now-a-days. Personally, from all the research I've done, the most effective way I've discovered is a bullet to the head, but I understand some (especially women) prefer methods that seem less violent. I'm not going to put any specific recipes or concoctions that I have discovered but I will tell you and everyone reading that if you desire a non violent method such as SN then all you need to do is research.. it's fairly easy to find effective methods to ctb by mixing common household cleaning products that you can get at most grocery and/or home improvement stores. I found one that will cause death from one deep breath and just being exposed to the fumes causes the respiratory system to gasp uncontrollably so that once the chemical reaction starts the fumes will cause your body to inhale deeply even if the person is trying to hold their breath. So if a method like this sounds appealing then get a pen and paper and spend 20-30 minutes researching. If you ask a search engine for suicide methods then it will just redirect you to suicide prevention sites so you have to carefully word your questions so that it's asking the question in a way that seems like you're are researching for scientific evidence or answers not like you are researching to commit suicide. Good luck to you! I hope life gets better for you and you can find peace and happiness in life. I hope you can find answers that you are looking for. As hypocritical as it will make me sound, I hope you can find the hope, confidence, and courage you need to beat back the pain and misery in your life and find peace and happiness. I wish you nothing but good luck and fortunes!
As pro-life as this is, I can actually agree with this. There are NO "painless" ways of dying. If you want that, then just seek loving, caring, and genuine help and let old age and natural death (if you're fortunate to achieve that) happen. Even if you choose to live, you're risking cancer, disease, or something random happening. If you're serious about catching the bus, then you'll seek out a pragmatic way of bringing your life to an end. You'll find some peace with what your life was, accept it, and you'll be clear in understanding that catching the bus is the right thing for you to do. Get clarity and understanding before anything else.
I'm not trying to talk you out of it at all. I'm not encouraging you to do it. However, if you're looking for a "painless" way to end it, then unless you've got a hook up at a clinic where you can access such a thing, asking such a thing tells me that you may not really want to go through with it. And that's okay. However, understand that there's a risk in all of it. There are risks if you attempt to catch the bus. There are risks if you choose to live. Reaching old age and dying in your sleep surrounded by "loved ones" is a rarity that few in this life will achieve. Ozzy Osbourne was surrounded by loved ones, yet he suffered greatly until his last breath. So, living isn't necessarily always the answer either.
I say all that to say that you should seek clarity and peace with what your life is and was before making such a decision. While there are relatively painless ways to log out, even though the act itself may be violent, a lot of them are inaccessible to the masses. And if you're asking such a question, then you may want to explore yourself further to find if catching the bus is right for you. I wish you peace and serenity, no matter what you choose.