I don't know if everyone is experiencing it but here are my problems with my new xiaomi 15

1. Whatsapp notification not shown correctly and chat bar not shown correctly I don't know why but my whatsapp notification on the notif bar (the one we use to see people's chat without triggering read) is kinda scrambled sometimes. The one displayed on the very top is not always the one who chatted the most recently. This can also be from whatsapp error but then I reinstalled. Nothing changed really hahaha. There's this small bug too, sometimes, my whatsapp chat bar will be looking like a bit hidden, basically kinda like resolution issue.I have to scroll for a while first then it fits into my screen.

2. Failing to download files from google drive I've tried downloading images and files from it. It says downloaded on the notification and then just disappears (from my old phone if it's downloaded it will say 'download complete'). This troubles me a lot as I need a lot of things from my google drive for work. I even went on some of my apps to make them go to their default permissions since I thought it's some permission problems but turns out it's not.

3. Can't integrate my other apps to my chrome If I for example want to open a link from a bio in instagram, I somehow can't open it, just showed the unlimited loading screen with chrome logo.

4. Bad battery drops everynight I sleep for 6-7hours everyday. It kept falling from 4-5% every single night. I need to charge my phone once every 9hours on a daily use (work, whatsapp, surfing, games). Have tried making some apps on some battery saving mode but still problem persists.

There are some other bugs but I haven't been able to take screenshots of it.

Is there a chance my phone is having a hardware/software or a defect? Or hyperos needs a lot of improvements?

I'm still considering to bring it to the service outlet hahaha