I dont really have a favorite. I use the Google Camera because of the Quality but without the Internet Permission. For quick pictures i use the Graphene OS Camera App. The Graphene OS gets actually better day by day so i might uninstall GoogleCamera soon.

Host your own and only get a few friends or family on board to mask your traffic.

NewPipe

I tried calling the support today but i did not get to anyone. I will try again later. If i cant contact support i will probably send it back.

You need an SSL Certificate

Holy Shit. I like the overall Style but its just a litte bit toooooo much pink for me.

I use KiwiBrowsed but i want to switch to fennec because the chromium base of kiwi is bothering me. The only thing that is preventing me from switching is the speed of fennec. Its just not as fast as kiwi.

I really tried to love it. I tweaked a lot of settings but i never quite got the results i wanted. I still have a selfhosted instance running for occasional use. But i mainly use DuckDuckGo now.

I think there wont really be a good alternative any time soon, because those services need to be trained. You might find some open source shazam client.

That UI looks really clean. I love it. Is it open source? Not that i dont trust you but i try to not use any closed source apps anymore, i would appreciate it if you would share the link to the source code.