One thing that gets frustrating after a while is people who change their book covers every month or so because of ✨️profile aesthetics✨️. I can understand wanting to update the cover and make it look nicer, I can understand maybe once or twice, updating your covers so that all your books have a more recognisable style and theme. There are always exceptions, ya know?
But when it's every month or so, I'm not gonna remember fk all what your book is and if I've read it or what's happening at the point I left off if you're changing the cover that often. And it's even worse if you're changing the title, about text and/or title font too! I'm a visual person! More often than not, and this is for a lot of readers, we're gonna see the cover and remember what the book is about. If I see a cover for a MHA fanfic or a Yandere fanfic and it got updated to a JJK aesthetic cover or some Lofi Aesthetic to match your profile theme, I'm not gonna remember sht.
Once in a while is fine, but if it's every fking month, I'm giving up on re-reading your book for the 2nd or 3rd month.