NetGuard - https://f-droid.org/packages/eu.faircode.netguard/
TrackerControl - https://f-droid.org/packages/net.kollnig.missioncontrol.fdroid/

How was your experience with them? Differences in battery life etc.

Another doubt:
I had tried NetGuard some years ago to restrict internet access of apps like Gboard n Gdrive(I use the pdfviewer associated with it. Any lightweight foss alternatives to it?).
Was planning to use it again, but saw that eventhough they have a recent update, their Github doesn't allow issues and the latest pull request are from 2023. Is there some change in the app? Have they transferred to Gitlab or Codeberg.

I don't know much details about programming, so asking the doubt here because of the Simple apps transfer issue that I heard recently.

Thanks in advance.

Edit: Mentioned the usecase for gdrive