Si ce we are on topic, is there a way to have DeArrow on mobile? (potentially I could install it on FF, but would prefer an app for YT).

Firefox nightly has all the usual extentions (ublock, sponsor block, and yt enhanced) so these days I just use that (with NP for downloads)

Yes the Revanced YouTube Music app

No, i only use Newpipe Sponsorblock

I did but more and more videos don't play anymore.

I use LibreTube.

yes :) but i should use newpipe

ReVanced extended through Revancify

I'd love to continue using it but I've had issues with videos getting stuck in endless loading. So I have both revanced and the normal app installed

yes

I wish, but I’m too afraid of rooting my Iphone. I’ve been used to the ios ui for so long but I’m switching to anything not apple as soon as this one dies. I’m sick of everything apple.