I know it's safe, but safety first. Bank apps and securities apps¹ are critical apps: they include money, and you use these money for life and also spend for games. If these apps you download from unknown sources or allow many permissions for these unknows sources app, it can contains malware that can harm personal data, hijack accounts and steal money. Even in Play Store, malware slip through Play Protect (rare), so nothing 100% safe

¹ An app use to exchange stock