Debloat Phone without Root [+ Battery life / – Telemetry / – system Ads]

1. Enabling USB Debugging 

2. Change USB cable to transfer files

(A. Extract the platform-tools folder)

(B. Open the extracted folder)

(C. click into the search bar at the top)

(D. type in powershell)

(E. type in ./adb devices)

(F. accept firewall from adb.exe)

(G. Allow USB debugging on Phone)

(A. Download Debloater)

(B. Copy Debloater to platform-tools for ease of use)

(C. With Powershell still open, open the debloater)

(D. Select “Recommended” – “Enabled” – “All lists”)

(E. When you are done click “Review Selection” and then “Apply”)

(F. The software will now debloat your device! After its done restart your phone)

Important:
1. Before continuing please log out of any Xiaomi / Cloud accounts. If not you will soft-brick your device.

2. If you disable “findmydevice” as per Reddit you cannot log in to any more Google accounts. So make sure you are logged in with all of the accounts you need or dont disable it OR just enable it for a short time whenever you need to log in

3. Please read the description of some packages, calendar (if you need it) also gets disabled. Just keep calendar (or any other thing you may use from here)

4. This also stops some Xiaomi DNS entries and alot of Google telemetry

5. If you disable all of the packages below, like me, you will need the following apps:
(or atleast something that replaces these because they will get removed)
SMS
Call-App
Music
Video

6. We need to change 2 things in order for us to disable more packages

7. These are the packages you can disable

Here as list:

com.xiaomi.xmsfkeeper
com.xiaomi.xmsf
com.xiaomi.finddevice
com.xiaomi.micloud.skd
com.android.incallui
com.google.android.overlay.gmsconfig.comms
com.google.android.overlay.gmsconfig.geotz
com.google.android.overlay.modules.permissioncontroller.forframework
com.google.android.joyose
com.google.android.contacts
com.google.android.DeviceAsWebcam
com.google.android.apps.messaging
com.google.android.apps.wellbeing
com.google.android.dialer
com.google.android.googlequicksearchbox
com.google.android.partnersetup
com.google.android.printservice.recommendation
com.google.android.syncadapters.calendar
com.milink.service

Reddit android debloat topic 
XDA thread (ADB platform tools download link)
My own testing with 2 Xiaomi phones (extra disabled packages)