Similar experience when I tried using DuckDuckGo as default on recently bought Android phone.
I'm all in for privacy - and actively dislike many of Google/YouTube moves (which seem intentional part of plan and not so much accidental or with technical reasons) - e.g.:
YouTube doesn't allow parents to limit their young kids to only whitelisted channels ...
Even worse, if you block YouTube.com domain - kid can't sign into school account (Google classroom stuff) because signing into anything Google actually goes through something like accounts.youtube.com.
And yet after 20th or 30th time when I was not finding things though DDG and manually typing "google.com" to do a search there (browser and other android search boxes were defaulting to DDG).
I just switched default browser and search engine back to Google :(