Sagrido If you only want to use 1 bank account, bunq probably not the cheapest choice. I also don't know the prices in Germany and I have no idea if you are interested in a bank that doesn't give huge bonuses at the top or doesn't want to invest in certain things.
But I now use 18 bank accounts and I love it. Various bank accounts to save for larger annual costs, separate bank account for the holiday, for clothing, car, etc. And that is all separate from the bank account to do shopping so that I can easily see how much money I can still spend to do the shopping without having to think about what amount I have to withdraw for all other things.
I would never want anything else.
By the way, I do use a Pack so that it only costs 5 euros per month per person. The only drawback is that you will receive less interest (about a maximum of 2.5k euros instead of a maximum of 10k euros), but for me that does not outweigh the cost savings.