You can map your Caps Lock key to Esc.
Here's the modification I use: https://pqrs.org/osx/karabiner/complex_modifications/#caps_l...
"Change caps_lock to control if pressed with other keys, to escape if pressed alone."
No thank you.
I’m afraid of mapping the caps lock to escape as a holdover from flash games where escape quit your game and so I fear destructive actions if I accidentally press escape instead of the “a” key, whereas if I accidentally press control nothing happens.