Russians is definitely shelling themselves, sometimes just for nice image. Look at this video for example:
https://t.me/HersonVestnik/12073It's Lancet drone attack against S-300 system. The problem is that this system belongs to Russia. Just look at Z symbol on it.
If that's true then it would make for a very bad Russian joke.
(Intentionally) Firing at your own weapons while you are losing a war? I would not be surprised if the war ends in 2023 at this rate.