This drones are almost useless against modern army with good anti air defense. Here is Indian article with some technical details. https://www.defenceview.in/why-did-the-turkish-tb2-uav-sudde...
This seems superficially reasonable, but it looks like the TB2 Bayraktar was used to bomb the fuel depot in Bryansk less than two weeks ago and that's 150km into Russia. They seemed to have used the TB2 the other day on Snake Island. As of a week ago there had been 6 internationally confirmed incidents where a Tb2 was shot down. They were known to have had at least 20 when the war started and have received more sense…
I think a big risk here is thinking that only Russia is less competent than advertised. My guess is that 90% of professional militaries (at least those without a LOT of active recent combat) are Potemkin villages wholly incapable of operating as advertised.
Against any of those militaries, things which really should not work, frequently will work fine.