After the update I can’t find the free physics materials that use to be in the past version, for example the bouncy material to assign to objects. Where is it?
Im not sure as to what you mean, but just in case this would be of any help
That page shows how to make a physics material as well as describes it.
In the past, were there separate physics materials for friction and bounce? If so, then things are different now as they are both on a single material now.