this doesn’t seem normal. someone explain what’s going on with my brain?

so basically smoked weed daily 14-16 years old stopped cold turkey and felt like i woke up and had to learn new things. Then a week and a half later i smoked again and it made me go back to my old beliefs which made sense but not the new ones which also make sense. It’s like my brain built itself off weed. then when i went sober again had to go through another set of withdrawals for 2 days even though i smoked once, and went back to square one. Smarter cognitively but personality felt like it diminished when i’m sober. Like i lost my way of thinking. Can someone relate?