A lot of the busses have it here, but not all. It also depends if you are lucky enough the bus driver is actually helping.
For the trams it’s worse. To safe money they want to wait until the old trams get decommissioned, even when they are hard or impossible to use for disabled people. They also still build crossings made out of stairs, with no other way to reach the other side of the track unless you want to take a huge detour. Just because it’s cheap.
Germany loves their cars more than people realise…