Let me explain it to you, I’ve been an opiate addict for a long time and tried many drugs.
Drugs that are ‘uppers’ have the most ‘obvious’ euphoria.
For example if you take adderall/coke/meth/speed/MDMA you will get this shining bright euphoria, self confidence, energy, and other drug-specific feelings (for meth like you are king or for MDMA like you love everyone).
However, you owe these drugs back what they delivered to you.