>>17928
>if I had a gymnastics ring or at least something thinner to grip onto instead, maybe I could for a bit
That's uhhhh, probably not how it works.
As far as I know as long as your whole hand goes around the bar and your grip is stable you literally will not get any better (besides progressing) just from changing onto the rings or whatever. Actually rings move around and can rotate by themselves so it would probably be harder for you, since you might be automatically leveraging your weight without thinking about it.