Download an APK of an older version and disable auto-updates.

The API still works well so the old client doesn’t have any issues.

I agree, run Firefox as your main and then a privacy focused fork of Chromium as your second if you need it for specific website.

Personally I barely ever encounter issues with websites running FF.

Oh, so you want to make a website where you post personal pictures of youself and post updates of your everyday life, while connecting to your friends? It’ll be really big you say? There’s nothing else on the market lile this? Let’s go!!!