Your text is already good. I’d just make it slightly more natural:
Hi Bear Team,
First, I’d like to say that I’m really enjoying the app. It has a beautiful design, a clean interface, and an excellent user experience.
One feature I would love to see is the ability to select a predefined tag when sharing content from websites, apps, or other sources into Bear, not only when using the “Content of the Page” option.
I believe this would make organizing shared content much faster and more efficient, especially for users who rely heavily on tags to organize their notes.
Thank you for creating such a great app and for considering this suggestion.
Best regards,
Ryker