I thought I had gotten over my stutter but I was wrong.

I thought I had gotten over my stutter but I was wrong. for context i used to stutter a lot from class 5th to class 8th, to the point where i had to take a friend with me to tell the teacher what i wanted to say to tell her my name because i had trouble pronouncing A. i couldn't even muster up the courage to do my class presentation, would stutter all over and make a huge mess. i even cried afterwards and my friends comforted me but it lead to nowhere. fast forward to 3 years later, somewhere during covid all of this just stopped. i stopped stuttering while talking to my parents or friends and wouldnt hesitate in speaking in online classes. but then schools opened and again the same thing started all over again, just this time it wasn't as bad as before. i just stuttered telling people my name. now i'm in 12th grade and have been going offline school for years and havent stuttered at all up until today when someone asked my name and i had to take a minute to get the words out of my mouth, i eventually did but it still bothers me because it hampers my day to day conversation. i'm soon gonna go into college where i'll be making new friends talking to new people with judgement everywhere. i don't wanna be the subject to jokes. why do i stutter and how do i fix this ?