Surprisingly, Android phones on the market in China (mainland) are more "open" than googled ones, they are not banishing sideloading (although there might be warnings about it), as many Chinese apps are distributed as apks
Anyway please see keepandroidopen.org , @keepandroidopen.bsky.social
keepandroidopen.org
Keep Android Open
Advocating for Android as a free, open platform for everyone to build apps on.