I don't really understand what you're doing anymore. You don't have to use the .exe file to open the game in Kirikiroid2, but the data.xp3 file, and you need every file for it to work, not just the exe, so you just extract all files to a folder and don't change any file from its place.
It won't open for Windows because it was patched in a way that changed the files so they're compatible ONLY with Kirikiroid2. I quite literally got the original cracked Nekopara Vol. 1 with the Uncensored Patch, then applied the Kirikiroid2 compatibility patch to every file.
I've already tested the game with Kirikiroid2 in my own phone with Android 11, and 2 android emulators of Android 9 and 7.1, they all work the same without issues, so either your phone isn't compatible / isn't powerful enough, or you're just doing something wrong and don't realize it. I don't blame you though. Just make sure you aren't missing something.
I really want to help you out, and if I insist, is because I'm pretty sure it can't be the phone. The game can quite literally run in a potato, I'm telling you!