How can i achieve this gun movement like Camera stand still a bit while moving the arm to the right or left. Can someone help me with that? Like in the video.
Maybe try positioning the camera closer, adding a bobbing/breathing animation to the character, adding a slight camera lag, and aim offsets. The rest is all of the animations, meshes, textures, etc. Which you will need to create these on your own or purchase them from somewhere.
Hope this helps!