So, Nobody tried to help me but I solved the problem. After a edl Russian flashed my bricked phone to original CN ROM I tried again with TWRP and the result was the picture like in my upper post again and it bricked and stopped only in fastboot. Something goes wrong all time with mounting the storage.
Then I tried a old fastboot xiaomi.eu Rom with script and it works. After this old one I tried the newest and installed it with TWRP and solved this installation also. I hope I can help someone with the same problem
Then I tried a old fastboot xiaomi.eu Rom with script and it works. After this old one I tried the newest and installed it with TWRP and solved this installation also. I hope I can help someone with the same problem