>Phenibut
Yes.
bretty good for anxiety but also makes you tired so you have to counter it with covfefe. I once used it before a job interview but they just gave me just ans water there so I got so tired during the interview that I stopped caring for the job and performed rather badly.
It always gave me headaches the day after so it's nothing I'd want to use long term. Only for special occasions.
You could also try Kratom. It gives me headaches the day after as well but most people respond well to it. But you can't use it multiple times per week because you kind of get immune to it if you use it all the time.
Best for stress relief and confidence boost imho is to do serious physical exercise every other day tbh.