What type of equipment led to the situation in Pokrovsk? Ukraine has some of the most high quality utensils an army could ask (supposedly)

How the fuck is Pokrovsk so defenseless then? The whole situation could've easily been avoided had the forces been spread efficiently to cover the fronts.

That's not even mentioning the constant drone coverage over the whole region, which Ukraine clearly has an advantage in. And yet, Pokrovsk is about to be surrounded.