Dude I totally feel the same, but for some reason PICO-8 has only set controls and it's set to ESDF... Anyways, thanks for playing!
no, player 1 controls are arrows, esdf is for player 2! (as shown by the controller info when you click the controller icon)
change your calls to btn
to remove the 1
param and this will be fixed.
(also fyi someone uploaded your game to the lexaloffle bbs — which is nice for people using splore but maybe not something you want to allow)