SOLUTION: I cannot crack a password for gmail/hotmail/outlook365/...

ALL email services have password cracking protection enable, either blocking offender's IP addresses, faking positive results for bad passwords or faking negative results for a correct password.

Also hydra is telling the mail server that it is a password cracking tool to prevent misuse.

So if you test your own gmail/hotmail/... user account hydra will very likely tell you that the password is wrong. But it is not hydra that is wrong, it is the mail server detecting an attack attempt and giving a fake reply.