Even if someone here were to "recommend" some drug for you to try, it would be reckless and irresponsible for you to try it off the basis of that anyways. If I were you I would first find a source for research chemicals that you think would be reliable, and then research each of the drugs available to you one at a time until you find one that has the sort of effects that you find desirable. Utilize erowid to research the dosage and toxicity of the chemical you are intent on trying, prior to even placing your order. You should also purchase a milligram scale to insure accurate dosing, as these chemicals are often active in very small doses and eyeballing them is inherently dangerous. Also prior to placing your order you should find a suitable reagent drug testing kit so that you can verify your substance prior to ingesting it.
Once you do all of the above, order your substance, receive it, verify what it is to the best of your ability, and weigh a small dose - perform an allergy test! To do this dissolve 5mg of your substance in 1 liter of water, measure out 1ml of the solution and place it in your mouth for 5-10 minutes and then swallow. Wait one hour to see if a reaction occurs, if not, then repeat the above process with 2ml of the solution, and ideally titrate your way up until you have tested 1/10 of an active dose.
The best advice we can give you here is to be safe, and always take every single possible precaution even if it seems tedious or unnecessary. Remember that LSD and MDMA were once "research chemicals" as were many pharmaceuticals. I would avoid synthetic cathinones at all costs as well as synthetic cannabinoids, and DOx substances - but that is just based off my personal preferences. Also, NEVER buy branded research chemicals where you do not know the active ingredient is.
Do your homework kid, your life could depend on it.