It’s time you try Kumano Fude. Japanese brushes. Fude is like an entire makeup brush subculture. Google and learn all about it but in short, natural bristles that are bundled by Hand- and the natural tips are never cut into shape. Hence the hand bundling for shape. This technique along with using various grades or higher and higher quality (softness) bristles leads to the absolute softest brushes on earth. Beautylish selks a few brands of fude if you live in the USA. Wayne goss, Sonia g, koyudo, and Chikuhodo to name a few. They’re more expensive (sometimes) but many options are on par with prices from NARS, MAC, and few other high end brands at Sephora for example. You won’t find softer than fude