On Android 9 and below, download Psiphon e from the play store. And follow the on-screen instruction for installation; after installation, open Psiphon e. It will start searching for Psiphon servers; after finding all servers, select nearest from your current location.
And connect to the OpenVPN server with just one tap without any username or password.
If your device is not support, then download Psiphon 3 apk from the official website of psiphonisraelite.blogspot.com.