That PUBG fails, is clear. You just won’t have a good time with anti cheat based games like PUBG, Fortnite and the like.
Wanna play those? Stay on Windows or get a console. Just how it still is.
And problems with capture cards I would not book in the „normie“ camp, which on a basic level is the goal of this video series.
He set himself up for failure again with PopOS.
Cachy and Bazzite are much better choices by the other team members.
Well, not every system can handle or support multiple VPN connections with different providers, or the VPNs could interfere with each other. E.g. when using Tailscale you can not use another WireGuard based VPN according to their FAQs.
Also, it adds complexity to the stack and system as a whole on the client side. That is all fine and dandy as long as it works, but quickly a pain in the butt once you have to debug something.
Cloudflare Tunnels work great and are really easy to setup. Plus you are not exposing you machine completely to the outside, as the cloudflared service/container „calls out“, and Cloudflare is your reverse proxy. Downside is, you’re binding yourself to one of the US hyperscalers.
Pangolin uses the same principle, but is a bit more challenging to setup. Plus you need some kind of cloud server to make it work.
As you already have a VPN active at all times (at least it sounds like that), a VPN home seems out of the picture.
Unless you have a dedicated firewall at home, maybe reconsider the reverse proxy route. Personally would not feel comfortable with exposing a machine at home to the internet in full without a handle on what it can do or how it may be reached.
They are going the way normies would, which includes asking the LLM of choice for a recommendation. But as they just regurgitate listicles inhaled from the web, that is what you get.
Bazzite and Cachy are the more sane choices, though Luke is by no means counting as a Linux noob