This is the worst game I had in a while: not sure why, I didn't have my head in the game, and I know I did mistakes; still it was so bad I'm not sure if I made some big mistake I'm not seeing right now.
E1/0: maybe discarding dora with not one of them in sight was reckless, but I didn't have safe tiles; maybe
would have been better? Nothing says to me it's safe, but at least I have three of them, and there are a bunch of 
out.E2/0:
Step 4: maybe I should have discarded a honor? I already had a yaku a not one of my honors is paired; I think here I pushed too much for honitsu. (Same consideration in step 5.)
S1/0
8: I discarded
to have a better tanki wait in case I drew 
, and it could give a good wait if I drew 
, but I'm not sure it was the right thing to do.S3/0
12: I should have discarded
, I was too focused on iipeiko (not that doing otherwise would have changed the outcome...).