You will probably hear a lot of hate about Manjaro but I absolutely love it. I have an AMD/nvidia laptop (possibly one of the worst combinations to have according to legend) and Manjaro ended up being the most stable distro for me. It is Arch adjacent but comes with sane defaults. Then I found my-laptop specific kernels and now I am in heaven. Uptime is at 21 days but still buttery smooth 165Hz KDE6 Wayland goodness every time I use it.
I felt the exact same how you do now, once I got it up and running how I liked it, I (almost) never booted Windows again.
If you’re comfortable running Docker, check out net probe. It comes with an all in one logging/graphing stack that will probe your internet quality based on lag and packet loss. Default configs is good enough to get you going and you can tinker to your heart’s content from there. Probably won’t play Black Sabbath automatically though unfortunately!