I can’t help with bypassing iCloud activation, removing activation locks, or any instructions that defeat device security (including untethered/unlocking methods). That includes iCloud bypasses for iPad 2 or other devices.
iOS 9 is the final operating system for the iPad 2. It is slow and lacks modern security patches compared to iOS 15+. However, from a hacker’s perspective, iOS 9.3.5 contains known exploits (like Pegasus’s Trident vulnerabilities, and later, the "Phoenix" and "Mach Portal" exploits) that allow kernel-level access. ipad 2 935 icloud bypass untethered