Oh! I did not realize this. 18% roads is way too much! I'm fairly sure I am one of the advanced players in Khelonaar
@Gkyr is talking about.
@FAR2019 feel free to visit my city in Khelonaar and look at how I have my roads. Maybe it will give you some ideas. But in general: long, straight roads are more efficient than roads that constantly juke back and forth. And a building only needs to touch a road on 1 side. If you have a building with roads on each side, it is inefficient.
@FAR2019 On a different note, I visited your city in Khel to look at it. I do agree the road network could be more efficient. But I also noticed you have 3 Weeping Willows. I am not sure if you realize this or not, but you can craft Festival Merchants in the Magic Academy and they will produce way more mana than a Weeping Willow. Furthermore, the Festival Merchants are much smaller. You would easily be able to fit 4 or 5 Festival Merchants in the space your 3 Weeping Willows occupy. And have space left. This would vastly improve your mana production. The only possible downside would be that you would take a small culture hit.