We know very well how to fight a drone war, we've just spent millions on the expensive toys so we feel the need to use them.
There's an old old book called David's Sling that explains all this.
I'm not sure what you mean here.
Of course, I'm saying that America should have given far more weapons (and less restrictions) to Ukraine, so they could defeat Russia. At the same time, they could have embedded some troops to learn modern warfare (and frankly help deter Russia)
In fact, any #NATO country could have done that (or still do it)