Hi, we tip here by rounding up the bill. For coffee, breakfast, and lunch, this is a nominal value. e.g. 8,40 to 9,00

For dinner, especially at a nicer plate, perhaps one adds an extra EUR or 2. We announce the total amount when handing in the payment (and expect full change if nothing is said otherwise)

I don't remember the last time seeing any "suggested" tip value on any bill.

(The waitstaff here also aren't reluctant to split a bill by items, unlike in N.Am)