On top of that, I personally set my default youtube app to be newpipe, so if I'm just casually browsing lemmy or elsewhere I can click a youtube link and figure out what it is, even watch it if I want, without it effecting my normal account and watch history.
If I like the video and want more like it, I'll share to the Youtube (Revanced) app and finish it there.
In ddg, you can customize your options and on the right there's a button/box to get the specific ddg link with them all pre-set. Replace the normal ddg "link" for your search bar with that one and you don't need to worry about cookies or settings following you.