Well.. because every person is different and have different reactions when they’re stoned.
My dad tried weed when he was young and he told me he felt like he was out of his body. His mental stability was weak therefore he had a bad trip.
If people are not in peace with themselves I wouldn’t recommend them to try any drug for the first time.
When I smoke weed I personally feel relaxed, calm, kinda dizzy, hungry, I laugh at everything, I can connect with all the energies around me even without concentrating, idk, weed just makes me feel good. But I’m sure it is because I love myself and I’m calm and happy with my life.
I’d recommend you to try it again, but to smoke less than the first and second time.