It’s been just over a month using Fedora silverblue (Ublue ) for me and the experience has been pretty good.
What I do is just setup a distrobox container with the arch image and install software using paru from AUR. So far this workflow has been working really well. for me.
Also if you decide to use any Ublue spin, you’ll also get homebrew pre-installed. So that can also be considered as an alternative option to AUR.
Do you mind sharing the name of the app please?
Although I always use NewPipe / Tubular and Revanced as a backup solution.