I want to have minimal google apps (market, gmail, sync) as user apps without any permission to the system. like prevent google to force-remove an app from my phone etc. I saw once google apps installer for MIUI roms that did it but it does not work anymore. also cant convert in Titanium. running on AOSP so no gapps by default. I would be really thankful for answer. so thank you in advance.
I'm really not sure what you're asking. Do you mean that you wish to uninstall several Google apps to only have a few apps by Google on your phone?
Are you rooted? If you have root access, what you can do is use ROM Toolbox Pro to remove system apps (Google apps) from your phone without needing to flash a different ROM for this ability.
Please let me know if this answers your question or if I misunderstood your question.
Rooting a device: This can be accomplished using several different methods. There are several one-click root apps like KingRoot, Framaroot or TowelRoot.
Convert System Apps -> User Apps
You can use an app called /system/app mover. This is an easier method.