Using onn 4k pro streaming device everything else works fine from itch.io just this game
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Honest answer: it's hard to say exactly why without the device's crash logs. Ren'Py games use a specific tech stack (SDL + OpenGL ES + Python) that can fail at launch on devices with limited RAM, specific GPU drivers, or unusual display configurations. The Onn 4K Pro is a streaming device with only 2GB of RAM, which is around the very lower bound for Summer Vacation — and on a streaming device (vs a phone/tablet with the same RAM), system overhead leaves even less available for the game itself.
The other apps and games that work on your Onn are probably built with different engines (Unity, native Android, HTML5 wrappers, etc.) that handle these constraints differently. It's not really an apples-to-apples comparison.
Unfortunately, debugging this would require logs from your device and a fair amount of back-and-forth, and as a solo dev I have to pick my battles, especially with very low-market-share devices.
If you have access to a regular Android phone or tablet (2018 or newer, with at least 3GB RAM), it should work fine there. Sorry I can't be more helpful on the Onn directly!