Hello, Welcome to the Forums.
This tutorial just came out recently about custom loot pools for chests. (Although I do recognize that asking someone to dive into Verse is a big step)
You may be experiencing a longstanding foliage bug. Does disabling collision in the details do nothing? (You could also try selecting the mesh component and disabling collision there)
For roads - Check the learning hub or search - youtube search for “uefn roads” and you’ll find some tutorials to try.
Happy to chat more about any of those aspects.