Long range attacks are about knocking out supplies, the ability to produce new supplies, and the ability to get supplies to the front line.
Say Russia is getting more newly made artillery shells to the front line. The best way to fix this is to blow up the factories.
If you can’t take out the factories directly, take out components that the factories need to operate: ore processing, fuel refineries, electricity grid, etc.
The problem is all the critical targets are a long ways from the front line and Ukraine currently has limited capacity to hit them.
Meanwhile Russia is targeting all of Ukraine’s internal infrastructure constantly.
Long wars are won by the production capabilities of the groups involved as much as the front line troops.
A large equipment mechanic I know only wears scrubs.
I might have asked him, “What’s the diagnosis Dr.” once or twice as after he looked at a tractor/combine etc…