I just allow my browser on my phone to install apps and download the apk file from their site or github and install like that.

F-Droid is a popular alternative to the Google Play Store. It's an open-source app store that focuses on providing freely accessible and often open-source apps. It offers a transparent and privacy-friendly solution. 📱🔓 #FDroid #Android

F-Droid

F-Droid, Aurora Store (anonymus) and I love Obtainium to directly install from Github. If none works, very rarely also Aptoide.