Searching for the "latest version" of Dolphin for 32-bit Android is a bit of a quest into the past, as official support for 32-bit systems was famously discontinued by the Dolphin Emulator team
For everyone else: Upgrade your phone. A $50 modern Android Go phone is often faster at 64-bit emulation than a $500 flagship from 2016. The future of emulation is 64-bit—and it is spectacular. download dolphin emulator for android 32 bit latest version