nutbutter
Turning on “Block connections without VPN options” will not make KDE connect work. Your solution is, either to keep this setting turned off, or use Rethink using another device. By using another device, I mean, set up Rethink either on your router, or maybe an old Android with Rethink installed and using using it as a hotspot with “Allow clients to use VPN” option (which is available on LineageOS, but not on GrapheneOS). Or you can also set up something like piHole.
Are you using the official docker image? if yes, try linuxserver.io’s image. they also have a proper guide to using HWA.
iCarly
I highly recommend using PeerTube instead of YouTube.
For voice, I recommend using something Ardour or LMMS to mask your real voice with some filters.
I am assuming your system is updated. What is the output of xrandr
?
Also, have you tried logging in to an Xorg session, and then changing the refresh rate?
Use Proxigram. It works, most of the times.