It's in the name, the point of them being private is that other people can't access them So you can't get them
As i've said before, there's a good reason why they don't just let people download "their" "mod"; they don't want people to see how shitty it is.
A lot of the time the person who has them paid a lot of money for them but the author wouldn't sell them to a random person so usually you can't get them at all unless you are a famous youtuber with lots of connections and money
Actually, there is a Russian application called VK, and some Russian mods creators are selling their mods, people can buy those mods
he's telling the truth, we have some communities here where people create mods themselves and sell them
Like the picture below, you pay for 2000P, and you can make your own order of the mod you'd like to make
it's unlikely, in Russian it says "private chat", which most likely will just allow you to communicate with the developers of these mods
Oh, I am not a Russian, when I am trying to communicate with them, I will use the translator, which will be a bit inaccurate,