There is a way to install good lock modules on m Series. Those modules can be installed but not working properly. Some modules get Crash and some like task changer can open successfully but can't be enabled.
How i do install Good lock modules on m series device. First Download Apk Editor from apkMirror(Dont download it from google play) After install Apk Editor and open it and select (lets say.....) task changer.apk and then just rebuild the app. (This can be found on Storage/Apk Editor folder). then install it. then install nice lock to see those installed plugins.
You can try that method and I tried but it not working. Task changer not crash but it cant be enabled. I think its some kind of permission error. those permissions cant be enabled.
I also noticed All Samsung M series Devices has Samsung One UI Core and Others has Samsung One UI Version. Those are different platforms. No Knox, No Secure Folder, No Bixby, No Goodlock aps.
yes, by any means or way m series can't use good lock module except "one hand operation" and "nice catch" which is available on galaxy store without being download goodlock you can use it your observation is good but i think its late as you bought m series phone
all goodlock modules can run on M series but samsung restricted most of them inside core.jar (in framework). once you root, you can remove that restriction and run them on m series.
