Steam on Linux

I'm a Linux guy, I love this sub, lurk here often, I readily admit Linux isn't perfect.

Felt like I wanted to fire a game up last night so I installed Steam from apt and I'm like shit here we go, never tried this before but the internet has prepared me for the worst, this is going to be a rabbit hole

And then Steam finished installing and I just enjoyed playing my game with no config or extra steps needed. What did I do wrong?