Dallas is a metroplex. Generally speaking, south Dallas should be avoided. Places like Oak Cliff and Pleasant Grove (south Dallas) are very rich in crime. Your car could be vandalized at night.
Immediate west Dallas should also be avoided. Again, high crime.
AT&T stadium, where the game is played, is west Dallas, but in Arlington (a suburb) that is farther west than the bad “west Dallas”. So staying in Arlington or Irving would be safe. North Dallas is always safe. It’s the rich part of Dallas where Matthew Stafford and Clayton Kershaw are from. Places like University Park, Lakewood, Highland Park) are all upscale and safe. The only negative about north Dallas is the cost and the driving distance to stadium (30-40mins). But your parked car while asleep in the hotel will be safe in north Dallas.
Now nightlife, bars and stuff. **** man, Deep Ellum and Uptown are the places to hang out at night. Everyone enjoys Deep Ellum.