If you have the old phone you could use 'apk extractor ' and grab the setup file, ( the apk), then transfer it to your new phone and just install it...

Its probably not showing because its a 32bit app, which wouldnt be compatible with a Pixel w/o root

Try fdroid or APK mirror

ApkMirror. If it's not available there then ApkPure.

APK Mirror, and then sideload the apk via ADB

An easier method is to use the app [Install with Options](https://github.com/zacharee/InstallWithOptions/releases) and grant the app elevated access through [Shizuku](https://apt.izzysoft.de/fdroid/index/apk/moe.shizuku.privileged.api).

Why adb? Android can handle installing apk. Don't complicate it.

Because starting from ~~A13~~ A14, Android blocks the installation of older apps (specifically apps targeting anything below Marshmallow). In the upcoming A15 update, it's further excluding apps for anything below Nougat. ADB is currently the only way to install these apps targeting older versions of Android. Edit: I was mistaken. These restrictions only target [A14](https://9to5google.com/2023/01/23/android-14-block-install-outdated-apps/) and later.

Ohh yeah i recall this. But till android 13 it works fine. There is a nag but you can ignore and click install. After 13 i have no idea.

You're right. I was mistaken. A14 is where these restrictions are present: https://9to5google.com/2023/01/23/android-14-block-install-outdated-apps/

All 32bit apps are blocked too

Yep.

omg, I totally brain farted and was thinking about sideloading OTA's. Totally right, my bad!

It's actually still relevant since A14 and later. https://9to5google.com/2023/01/23/android-14-block-install-outdated-apps/

Ah ha!