Conform tool?

You’re welcome!
There are solutions for the mesh, but you have to provide complete information about it and what it means perfectly in your conception, if you don’t know how to edit it and want to learn. Look for Artisan and a couple other extensions.

‘mesh isn’t perfect’ - it’s not enough info.

The desired mesh can be created in such a way as to make the transition from different types of roads (concrete alleys, cobblestone alleys, etc.) to the surrounding terrain.