Hello again,
sorry Nickrout for the German error message. 
i thought after the Oktoberfest everyone can speek german.

Now i tried to downgrade my HA.
After i downgrade to 2022.2.6 I was able to delete my Cast integration.
after a restart i intallated Google Cast again.
But it still doesn´t work. in the Log i get this message.
Logger: homeassistant.config_entries
Source: custom_components/cast/home_assistant_cast.py:30
Integration: Google Cast
First occurred: 07:26:46 (1 occurrences)
Last logged: 07:26:46
Error setting up entry Google Cast for cast
Traceback (most recent call last):
File “/usr/src/homeassistant/homeassistant/config_entries.py”, line 327, in async_setup
result = await component.async_setup_entry(hass, self)
File “/config/custom_components/cast/init.py”, line 48, in async_setup_entry
await home_assistant_cast.async_setup_ha_cast(hass, entry)
File “/config/custom_components/cast/home_assistant_cast.py”, line 30, in async_setup_ha_cast
user = await hass.auth.async_create_system_user(
TypeError: async_create_system_user() takes 2 positional arguments but 3 were given
what can i do to run my Google Cast again?
Thanks for your help and sunny greatings from Bavaria.
Diver