Using an alternate resources as mentioned will not get rid of any pre-installed apps. If you want google free options then it would make sense to remove the google~android ones before installing alternatives, hence the option to use ADB
Here’s a link on how I removed some unwanted default google apps
Developer Options
FP3 and FP4: Settings > About Phone > tap build number 10 times
Settings > System > (Advanced) > Developer Options > ON