I cant rase vram in Radeon graphics

I can’t rase vram more than 1 gb even if I have 16 gb of ram , i use universal tool amd from browser in usb drive end in “device manager” dare is no cbs amd options , actually dare is nothing except the network options, i use the same usb in another pc end it works but thes pc
(hp elitbook 745 g5 ) w Ryzen 3 pro 2250u i cant change vram its stack just in 1 gb ,pls help, thanks.