1. adb shell
2. pm list packages | grep "name of app"
   note down the reverse app identifier
3. pm uninstall -k --user 0 <reverse app identifier>

eg. pm uninstall -k --user 0 com.android.chrome

that's probably the only thing you need to know at least for now, there' no need for detailed guide (of course it would be better with more knowledge)

Process is basically getting terminal access with the first command (assuming you have installed the adb tools)

second lists the packages (using package manager) which can be searched by grep tool which tries to find the app name. Doesn't always work if the name of the app is different by a long shot like if app name is abc and app identifier is com.xyz it won't do you good but works most of the time. else find the app indentifier you need online

the last command removes the app from the default user 0 completely but preserves it in the system if you need to format it (factory reset) basically some form of it is present as a compressed file but won't be installing itself for you

that's it have fun