Bought my first sable brushes and I hate them :(

Relatively new painter here. Started about 8 months ago and started with speedpaints but started added acrylics recently and a wet palette.

I’ve tested multiple cheaper synthetics, nic pro (which all frayed and I hate), other cheap no names(which are actually surprisingly decent), and recently Princeton snap! Which I really like and actually hold a tip very well.

I decided to get rosemary and co 33 - 0 and 1 sizes and I’m barely using them because they feel flimsy and bend with the lightest touch on the mini. I feel like I have no control when compared to the Princeton synthetics.

What am I missing here with all the praise for sable brushes? Where do they excel?