See if lineage OS might support it.

I have not tried, and couldn't find a model called 'Huawei 5', so std apolls if I waste your time.

Have you considered OpenHarmony.cn ? Huawei made HarmonyOS, forked it and supports openharmony community-based OS themselves, so there's a chance that your tablet will work with it.

Overview of Huawei's role: https://deepwiki.com/fenwii/OpenHarmony/5.1-openharmony-vs-harmonyos

Huawei device support: https://www.huaweicentral.com/8-more-huawei-devices-qualified-for-openharmony-5-0-compatibility/ (from 2024) https://deepwiki.com/fenwii/OpenHarmony/5.2-device-support

Also: https://openharmonyos.org/ (english architecture walkthrough etc)

I checked here https://xdaforums.com/c/huawei.11977/ but didn't find a Huawei with "android" in it's name. Maybe there is a more official name for your tablet? Anyhoo, good luck.

Fedora GNOME with extensions is a great Linux tablet OS, but I'm not sure it would support your hardware, it might only support Microsoft Surface tablets