The Ukraine - Russia war is not a real modern war.

It's the equivalent of a powerful army from the 1990's fighting a powerful army from the 2000's.

We have had no lightning II equivalent jets. Nor have we had the most advanced artillery or missiles in use excepted in possibly extremely limited scope.

The tanks being used are also not the cutting edge of today but rather limited number of what would be considered decent in the 2010's.

At most the western intel may be using 2020's capabilities but beyond that every thing else is far under powered compared to what is actually possible with the newest tech yet we are all impressed because we haven't actually seen a proper modern war in quite some time.

The Afghanistan war was stagnant for about a decade at least.

The last big modern war that I am aware of with the newest tech of that time was the 2003 Iraq war which was fought with far better logistics, gear, and trained troops than what we see in the current war.

On the power scale I would put the current conflict as the equivalent of fighting 1990's to early 2000's NATO.

This is not the true power level of modern warfare and it is likely that we will not get to see how strong a modern military actually is for another decade or two at the very least.

This war is missing drone swarms, robot gun dogs, cutting edge war jets, newest war tanks, the new guns replacing the AR rifles or whatever they are called, AR headsets, mosaic warfare strategies, fast deployment iron domes, etc. Those are just the things that are currently possible that we are not seeing in this war from the top of my head. There aren't even any disruptive warfare technologies being used on the ground like sound or laser weapons on a mass scale.

In conclusion - You still haven't experienced true modern warfare.