After thinking about it, I decided to go for the Huawei Matepad Mini 5G (512GB, China set) and got the stylus too! I bought it from Shopee, but the shipping from China to Singapore will take about 2 weeks.
I was a bit worried if the HarmonyOS would actually run my Google apps, but after messing with it for a day, almost everything works great! All the apps I installed are running perfectly. The only thing is, I can't find a few apps I usually use, but hopefully, they' will be added later.
Good news: apps like UOB, Singpass, HealthHub, and CPF Mobile all work fine. Even Microsoft and Google apps have zero issues! I can use my Google Drive and sync my pictures to Google Photos without any trouble.