I want to download 21.10.1 driver for ryzen 5 3400gbut i cant see this version on Previous Drivers list .help me
GURU 3D has all the AMD Drivers since Catalyst. There you can download drivers older than 21.10.1 or newer if so desire: https://www.guru3d.com/files-categories/videocards-ati-catalyst-vista-win-7.html
Just make sure the previous AMD Driver you download supports your AMD APU processor before downloading and installing.