‘Dog’ attempts too many tricks during this bumpy but well-intentioned road trip

“Dog” (2022) – U.S. Army Ranger Jackson Briggs (Channing Tatum) is struggling.  He needs a job. Briggs served in the Middle East for years and lives stateside now but suffers from concussions and post-traumatic stress.  The man searches for a purpose and – hopefully – another military assignment.  However, he deals with more rejection than a ticketless, penniless football fan negotiating with pricey scalpers outside a Super Bowl venue.   Well, finally, an old colleague grants him a chance.  It’s a weekend job but a valuable, salient one.  Sadly, a fellow…