This is indeed a quick and easy method even for noobs like me. My phone is noticeably faster now. Thank you very much.
Aside from Huawei apps, I also removed Google apps I barely use. Here is a list:
Google - com.google.android.googlequicksearchbox
Maps - com.google.android.apps.maps
Drive - com.google.android.apps.docs
Play Movies - com.google.android.videos
Duo - com.google.android.apps.tachyon
Photos - com.google.android.apps.photos
Play Music - com.google.android.music
Youtube - com.google.android.youtube
AppGallery - com.huawei.appmarket
Files - com.huawei.hidisk
Support - com.huawei.phoneservice
Video - com.huawei.himovie.overseas
Music - com.android.mediacenter
Themes - com.huawei.android.thememanager
Email - com.android.email
Party Mode - com.android.imedia.syncplay
Notepad - com.example.android.notepad
Ride mode - com.huawei.ridemode
HiSearch - com.huawei.search
I haven't encountered any problems resulting from uninstalling the apps on the list. I've left some system apps like Phone Manager because I find it really useful.
I NEED HELP with one thing though:
After an update, two third party apps were installed to my phone (Lazada and Kwai). They can be uninstalled normally BUT they automatically reinstall whenever I boot my phone. I tried uninstalling them through adb, but it didn't solve the problem. Hope someone can help. Thanks.