I'm a fan of strong passwords (and MFA where possible) and Diceware combines long (= strong) passwords plus the possibility to keep them in memory. If there are too much you can still use a password safe. This is what I alsso do for long time memory.
You need these three files:
If you are looking for a nicer and multi-language interface, see https://github.com/grempe/diceware.
If you just want to get German language password you can also use the generator here. Simply enter the parameters of your choice into the input fields and press Create. Whatever the output is, I use this as inspiration only for my next password.