I've tried Obtainium twice now and both times I couldn't figure it out.
I figured it out and Im way dumber than you. That said, when it doesn't work and its impossible to manually adjust as a newb
I'm dumber than people think.
The UX could be a lot better! I usually just drop in the GH release page and it works. I've had issues with it conflicting with Aurora Store updates though.
Ok. 3rd time's a charm.