I think this is
alternate-leaved golden-saxifrage
I tooked this with RP ,40mm 2,8stm with 70mm extension ,so around 2x . F16 iso 800
20 picture focus stack then it stopped .
I guess problem is with high magnification ,on some point there will be too small sharp areas for autofocus detect it and it thinks pic is done ,when cant find sharp.
Hard to find enough still weather for 2x focus stack
Tried also put start point to stamen heads but they are too small for autofocus to hit,and somehow touch drag focus point works very bad with high magnification.
I wish could move focus point on 5x view on focus override,with arrow buttons.