Can you remove each filter inside the activity?, Or how Can I protect that activity of the AndroidManifest.xml from possible attacks?
Usually for mobile apps, we can do obfuscator (in Outsystems, there is AppShield to do this)
https://www.outsystems.com/blog/posts/appshield-advanced-mobile-app-security/
https://www.outsystems.com/forge/component-overview/9379/outsystems-appshield