Actually, it's not that your calligraphy has regressed. You might as well find out the original words and compare them with the present ones. It must be the better people now. The reason why I feel ugly is mainly because I have deepened my understanding of calligraphy and improved my horizons through practice and reading copybooks. In contrast, the progress of writing has been relatively small, and there is a gap between eyes and hands, so there is this feeling.
This stage is very bitter and loses the fun of practice, but it must be passed. Sticking to it for a period of time can appropriately reduce the number of times of practicing calligraphy, but the quality must be guaranteed, and it will be better after a while.