[Android Software Development] Lostek:
Thank you, for your answer, runekock.

First of all, I prefer to ask with this "bundle" as I have many questions atm, and all my questions (sadly) cohere with each other. But I believe that after one or two rounds, it will be more clear to me and question will disappear;)

Some more reactions on my original questions:

[1][11] Yes, meanwhile I make a research and OpenGApps has no port for Android 13. This article helped me to be more in a picture with GApps alternatives: https://www.xda-developers.com/download-google-apps-gapps.

Ok, microG is a bit different project, thank you for your information about this.

Do you have some experiences with other GApps solutions, esp. on Android 13 devices? Are manners, procedure of installation and using of all these GApps solutions plus/minus same?

BiTGApps

FlameGapps

LiteGapps

MagiskGapps

MindTheGapps

NikGApps

OpenGApps

I guess for LineageOS 20, the best option would be MindTheGapps.

[2] Wiping data is the solution, but it means i will get the clean installation. Ok, so there is no GApps package solution that can be installed additionaly, i.e. all must be set up at one time?

[3] Little off topic, please. Are you familiar with Galaxy phones, please? I am just wondering if in this tutorial:

there is installed the Custom Recovery. The truth is that there is the "recovery.img" file in LineageOS builds file that is need for flash: https://download.lineageos.org/devices/beyond1lte/builds

So do you think that this is the (LineageOS) Custom Recovery, or do we deal with phone's recovery in the video?

[4][5][6][7] So all GApps they are part of the package and already installed with the package, they stick to the package and I can not simply uninstall them, am I right? So if I want less Google apps (get rid of them), I have to downgrade and re-flash with lower level package?

But if I want more Google apps, can I simply download them via Aurora or Google Store? Does it work like this?

The minimum GApps package ("core", "pico", etc.) installed (flashed) on my phone will allow me to install and use whatever Google apps from the Aurora/Google Store?

Or do I select within every package during the installation process which Google app I install?

Maybe I still miss how it works, I am sorry.

Well, so if I want only Google Calendar, Drive, Gmail, Play Store & Translator apps, I install the smalest package, and than normally download these apps (via Aurora or Google Store) and use them?

[6] Ok, there are e.g. "OsmAnd" or "Mapy.cz" maps. I do not want to use "Goole Maps". So if i install the smallest package from whatever GApps solution, I will be able to use any maps, correct?

[8] That is why I use only "Aurora Store". 95% apps downloded via "Aurora Store" works fine, but yes, some of them they need Google Services. As I understand correct, with the even smallest package I will make every app, incl. the Google ones, 100% functional, even without "Google Store" app installed? Functionality is realated with Google Services, not with "Google Store" app, correct?

[9][10] So using any GApps on my phone via concrete GApps package will not give me any advantages? These apps will behave as on usual Google Android phone? The "Shelter" app works perfectly on my phone. Right know i do not have on my phone any of Google apps. I do not use any GApps package, but I belive that to freeze "Google Calnder" etc. would be no problem at all, but of course, when the app is freezed, there is no sync and activity; this is just on demand type of usage.

Thank you for your comments!