Accepting that there is room for improvement, that is the first step to improving. If you truly want to write tales woven to interest other people into reading them, then you have to write. What you write might be a pile dog poop, but if you never get feedback on said dog poop, you’ll never grow. The best ways to grow and improve are to to write and to read. Research writing techniques and actually strive to improve.
I know the first forays into writing I had were piles of huge embarrassment. I am actually semi glad I no longer have copies. They were… very poorly written with horrid characterization and world building. But they were steps. Practice. Most never saw the light of day. I did post once to Fanfiction.net and received horrible criticism, not constructive at all. But I reevaluated my writing style and strove to improve. Most of my writing after that was shared only to my close friends. They offered feedback and areas to improve.
Here on the forums, this is a public place. You may post something and get no input. You may get backlash. You get praise with no feedback. You might even get constructive feedback. But you can’t filter these things. Posting here opens the gates to feedback, whether you want it or not.
All I can say is just keep striving to improve. Research writing styles, character growth. https://nanowrimo.org often has many resources that are free, especially during November. Camp Nano goes on periodically during the summer and often offers free webinars or articles on character and story development. Some of these offerings are really good (though I’ve heard there are a few misses. They are free after all lol). I think the main thing that has grown my writing is just practice and analyzing some of my favorite novels.