Can't remove bloatware after rooted

Question

After my phone is rooted (confirmed by Advanced Root Checker*) using this tutorial, I can't remove bloatware. Normally this can be done by System app remover pro, but now the removal keeps failing. Do you know why is that?

_{*It says that I don't have "Read/Write Path". I don't know what this mean and am not sure if it's relevant here.}

Answer 1

You don't have to root your device for debloating.
System apps can be "uninstalled" from adb shell

adb shell pm disable --user 0 <pkgname>

(actually that will disable the app. Do this again after each factory reset)

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If your device is rooted with Magisk you can remove apps from system (overlay).
Just create some empty files for the file/directory you want remove

/data/adb/modules/DEBLOAT/system/app/Bloatware/.replace
/data/adb/modules/DEBLOAT/system/app/Bloatware.apk

where DEBLOAT is the id name of your Magisk module and module.prop is the module info

/data/adb/modules/DEBLOAT/module.prop

id=DEBLOAT
name=my first module
version=0.0.0 pre alpha
versionCode=000
author=my name
description=just remove some of my system apps

If you want you can create a Magisk flashable zip for your module, so you have it handy in case you need it again.

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Additional explanation quoted from the Magisk Developer Guides:

Module Tricks

Remove Files

How to remove a file systemless-ly? To actually make the file disappear is complicated (possible, not worth the effort). Replacing it with a dummy file should be good enough! Create an empty file with the same name and place it in the same path within a module, it shall replace your target file with a dummy file.

Remove Folders

Same as mentioned above, actually making the folder disappear is not worth the effort. Replacing it with an empty folder should be good enough! A handy trick for module developers is to add the folder you want to remove into the REPLACE list within customize.sh. If your module doesn’t provide a corresponding folder, it will create an empty folder, and automatically add .replace into the empty folder so the dummy folder will properly replace the one in /system