I just watched a video within the last week, having trouble finding it but it was probably posted here… I think it was an interview with a drone team leader. Anyway, he said russians use similar drones too, but they severely lack reliable communications with other units or with artillery (sometimes the means of communication simply does not exist), so their drone use is not nearly as effective. They also often mistakenly frag friendlies, but what’s new?

Yes the Russians have their own grenade drones.

I saw a post of Ukrainians who captured a few Russian drones like this, so yeah.