Oh, thank you guys! I had no idea about Huawei creating their own OS! I'd rather have Play Store.
So, based on these replies, I better go for Lenovo or Chromebook? What about Samsung? I have had them better (their tablet - their phone now) - the only reason I changed from Samsung to Asus was the price!
Right now, the tablet is still working. It still reboots, but much less! But I deleted some stuff and have been trying to use my phone more. And it doesn't reboot when I'm using it (like going through Instagram, or FB or such) - it mainly reboots when I basically want to *start* working with it! (I haven't done a factory rest yet. Hopefully next week.)
Thank you again for all the help guys!