Go to your Google account, go to privacy.
Change/Hide your name/email by logging in.
I don't know about the "anonymous" thing, but if you were to hide your email/change your name you wouldn't feel the pressure.
You can now "Archive" an Instagram post.
The picture will no longer appear on your profile grid. They are private to yourself.
Only you can see the posts you've archived.
Press the "..." button on a post to have the option to Archive it.
For those who are wondering, even after 10 years (lol), option to hide Favorite playlist is still missing for some people.
Actually, I found out it was depending on the language you are using on YouTube. It's crazy.
So all you got to do is switch language to English (US), then go to your playlist, show it all, then you'll have the private option showing.