Creating methods on your own is quite difficult, mainly due to the education barrier.
In the town where I live, I hadn't realized that the career of "Pharmaceutical Chemist" exists, but since it's in the third world, I'm sure they'll only teach you how to make cookies.
However, I believe there are jobs where there is a possibility of accessing some methods:
- Working as a police officer or joining the military: Perhaps it may help you access firearms, but I don't know the recruitment conditions, as sometimes in some countries, they reject LGBT individuals.
- Working in a gift shop: In my opinion, this option seems suitable, but I have no knowledge of its effectiveness. Some gift shops sell balloons containing messages, and those balloons contain helium, and the shops usually have helium cylinders. I've seen helium cylinders in many shops in my town. I don't know if it's as effective as hydrogen.
- Working in a processed meat factory: I have no knowledge about this, but I think it's possible to obtain SN here because it's used to cure meat. Perhaps you can access SN. However, I don't know if it's really used everywhere. On the other hand, I don't know what the probability is, but I think there's a chance of finding SN by working in a charcuterie that produces processed meats independently.
There are other jobs, but I consider them
risky, illegal, or painful.
- Being a drug dealer would allow you to access F, but you run a great risk of being arrested by authorities.
- Being an employee in an unsafe place at night can help, but it's dangerous. If you get robbed, you might get stabbed or shot, which can be extremely painful. The same applies to other jobs like security guard or taxi driver.
If helium is truly effective, then the gift shop is your best option.