What worked for me at my old school was using a ShadowSocks proxy. ~~Basically what this does, is it takes all your traffic and just makes it look like random https traffic (AFAIK).~~ ShadowSocks is just a proxy. The description fits the Cloak module, mentioned below.
I believe multiple VPNs support this, for me with PIA VPN it's in the settings under the name "Multi-Hop" (PIA only supports this on the Desktop App, not on mobile).
This technique is pretty much impossible to block, unless you ban every single VPN ShadowSocks Proxy IP. If that is the case for you (chances are practically 0), you could also selfhost ShadowSocks in combination with the Cloak module, however this method is a lot more complicated.
I really like Pop!_OS, AFAIK it doesn't have any telemetry. It's basically a Ubuntu fork but without the stupid Ubuntu stuff, and they're currently even working on their own Desktop Environment.