grapheneosbeginner ould you please explain it simply so that even a child can understand it?
I strongly recommend you have a look at these 2 threads:
https://discuss.grapheneos.org/d/2962-app-repositories-google-vs-aurora-vs-apk-vs-fdroid
https://discuss.grapheneos.org/d/2299-install-apps-from-gplay-rep-fdoid-rep-or-githubwebsite