A lot of writers find it easy to walk away from unfinished stories and just lose the vision for the entire plot of the story and leave behind the characters they made, the dreams they had, and the world standing still unable to move because nothing is progressing the story anymore. The world becomes completely forgotten and everything in that world becomes nothing but forgotten memories all abandoned because the writer lost the drive to continue on with the story until the very end.
Just remember that even if your story isn't getting any attention, engagement or you feel like the vision you had for it isn't there, your story is your creation your child that you want to grow into a great story wouldn't it be sad if you abandoned your child that you brought into this digital world? It's up to you and only you on how you want to grow your book and make it legendary even if it takes weeks, months or years never give up your story just take a long break then come back stronger with a clear vision