The easiest choice is to restore from seed. If you don't have the seed, then:
1. Try some combinations around what you think that you have written. In the way you wrote "wirte" here, you may have been mistyping something in the password too.
2. Check for various combinations with caps lock on-off, num lock on-off, or, if you use sometimes other keyboard layouts (like English/German) try to switch those too.
However, keep a copy for the old wallet file at least until you properly recover the wallet and you are certain you have (spend) access to all the funds.