Hello and welcome to the forum. For a dog with no specific health issues, It is hard for members to recommend a particular food as all dogs are different and finding one that suits is mostly trial and error. You can look at this thread
for advice on how to use the quick search tool and find some different foods. If you find one that you like the look of, feel free to ask about it as some members may have had experience feeding it.
You don't say what the toilet issue is.