I live in Russia so here is what I do personally.
Buy an ipv4 proxy server on https://proxy6.net/. I recommend getting the shared one for 33 rubles(if available) because I haven't noticed any bandwidth improvements for the dedicated ones. This site takes MIR cards so payment shouldn't be a problem. Make sure to set the proxy to HTTP mode. Also beware that proxies from this site can be a bit slow - though it's usually around 8mbit/s which should be enough for full hd videos.
Now configure split tunneling.
For PC, I use "Proxy SwitchyOmega" extension for Chrome. Add your proxy in the "proxy" tab and then set up your switch rules like so:
For my phone, I use VProxid app and route all the traffic coming from youtube app through the proxy.
Maybe a SOCKS proxy is good enough?
SSH can act as a SOCKS proxy and that's pretty easy to do. Your friend just needs to be able to login onto your computer with an ssh account and run this ssh command on her computer:
ssh -D 1234 yourmachine
And then set proxy settings in the browser or whatever to SOCKS4/5, localhost, port 1234.
You should look into tailscale (and if you want, headscale, which is a foss tailscale server implementation that tailscale clients including the android one work with out of the box). I haven't used tailscale for this explicit purpose so I don't know the exact steps but from the documentation I remember reading that setting up something like this is possible.
Tailscale is great. Don't know whether their centralized coordination service is blocked in Russia though.
That's where headscale comes in. They will have to use a VPS though.
I know it's disabled by the company in Cuba unfortunately 🥲
The easiest way is giving Mullvad five bucks, IMO.
Afiak hose commercial VPN services are on borrowed time in Russia.
They can also probably try using something invidious or piped.
What does the android client say when it can’t connect?
I’m not going to support VPN use for the purpose of getting around firewalls of US websites. Use VK.
I don't think you understand the effects of relevant blockages. This doesn't just cut off people from entertainment and pro-western propaganda on Youtube. This stuff also prevents people from accessing stuff like libgen, 
, getting extensions for some development environments, getting development-related software from repositories, and likely other stuff that I'm forgetting right now, not to mention the fact that Youtube also has plenty of educational material that is likely not replicated on VK or other Russian platforms.
On the road to fully automated luxury gay space communism.
Spreading Linux propaganda since 2020
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