You lost because you would obeyed your President, GM, and defacto Head Coach who obviously told you to look downfield to Cee Dee Lamb ignoring always open Amari Cooper, don't dump the ball to the RBs who were uncover with 10 yards of open field in front of them, and not to use your UFA TE who will probably sign somewhere else, and also, did not have authority to call a play after running the ball with 14 seconds left.
Arlington Jonesboys QB had 3 time outs and 2 minutes left before have and at the end of the game an gave it to the RBs 0 times. That's why the 49er LBs was some 20 yards down field.