Non-extraction correction review

I first started orthodontic treatment 5 years ago and I am still wearing a retainer . I don't know if there are many people doing this, but I said that I didn't need an extraction (to be honest, I wanted to have it pulled out because I was expecting a definite effect?) I just did it without extraction. It was in and out, but there wasn't much correction. They say it's not a hospital ㅠㅠ But if you see that not extracting is good for your dental health, it seems like that...