I use with nova and app called KWGT. I recommend getting the pro key for KWGT.
https://play.google.com/store/apps/details?id=org.kustom.widget.pro
Then I use the widget called "Free 801" I believe it is available when you down the KWGT app.
Line (Pro version) icon pack https://play.google.com/store/apps/details?id=com.natewren.lines&hl=en
I'm using the Hyperion Launcher (Paid version) for the double layer dock below.
On the playstore, download this "notification history log" https://play.google.com/store/apps/details?id=com.ikvaesolutions.notificationhistorylog
Keep the nofication app open, when you see that your message app opens up, check back on the notification log app and see if there is an app that is opening messages automatically.
If this is the case, on the app that is opening messages automatically, change the permissions for that specific app or just uninstall it.
If that does not work, I'd suggest doing a proper hard reset (factory settings).
The notifications log should rule out any possible apps that you may have allowed access to your SMS that may be force opening it.
I've used Wallpaper Changer for like, 4 years now. It works great at cycling WPs, and I believe there is an option to have the WP scroll with the home screen.
I use the Ghostek Atomic Slim for my Note 10+ and really like it.
Ghostek Atomic Slim Designed for Galaxy Note 10 Case Clear Heavy Duty Metal Bumper with Tough Shockproof Dual Layer Design & Rugged Aluminum Alloy Frame for Samsung Galaxy Note10 (2019) - (Black) https://www.amazon.com/dp/B07VDGXC8Z/ref=cm_sw_r_cp_apa_i_kzK5DbZ42RNQV
As far as I know the only one recommended by samsung to allow the fingerprint sensor to work are the whitestone ones:
Galaxy Note 10 Screen Protector, [Dome Glass] Full 3D Curved Edge Tempered Glass Shield [Liquid Dispersion Tech] Easy Install Kit for Samsung Galaxy Note 10 - One Pack https://www.amazon.co.uk/dp/B07VGCCLR1/ref=cm_sw_r_cp_apa_i_FTKODbB769Q8N
Galaxy Note 10 Plus Screen Protector, [Dome Glass] Full 3D Curved Edge Tempered Glass Shield [Liquid Dispersion Tech] Easy Install Kit for Samsung Galaxy Note 10+ and Note 10 + 5G - One Pack https://www.amazon.co.uk/dp/B07VL12MWQ/ref=cm_sw_r_cp_apa_i_7UKODb7P23F71