The installation guide for tailscale [1] requires a bit of terminal use, but it’s only copy pasting of a few commands.
There’s also a Decky plugin to control tailscale from gaming mode [2]. Installing and setting up both took me around 15min.

[1] github.com/tailscale-dev/deck-tailscale

[2] github.com/saumya-banthia/tailscale-control