Can a one time experience of drug use disqualify a job opportunity in law enforcement?

When I was about 12 or 13 years old, I made the dumb decision to try meth. Till this day I’m not sure if it was even meth, I was told it was but I didn’t feel the exact side effect that they say meth does like for example, I didn’t feel high at all and I still slept and had the appetite to eat so maybe I didn’t sniff it right or sniff enough to actually get a high out of it or maybe it was just salt but point is, I never tried to do meth again after that and now I’m 17 years old now and I have a dream of joining the law enforcement to become a Police Officer and I heard that any past drug use can disqualify me from acheiving that dream. I honestly have been stressing out on this and feel heartbroken that my dream is down the drain because even though it’s been about almost 5 years since that incident, I can’t hide the fact their was a possibility that I’ve had an intake of meth inside my system cause to be a cop, I have to go through a lie detector test which I’ll have to answer questions and I know they are going to ask if I had any past drug use and I won’t lie but I’m currently in the exploreres and taking a adminstration justice class to prepare myself but at this point, I don’t know if I’m wasting my time trying to become a cop because from what I heard, if a person has tried any hardcore drugs, they are automacticly disqualified. BUT If you know if there is any way I can still achieve my dream and become a police officer even with that past decison that was made, please let me know. I’d prefer if someone from the law enforcment would answer this question but I will accept advice from anyone as well. Thanks so much