What yr make model? There's several causes.
There's alignment, tires, rims, ball joints, tie rods and ends, the steering box, bushings.
start with steering components, motor off have someone turn the wheel slowly side to side look for play or looseness.
The steering boxes have slack adjustments.
Check wheel bearings and ball joints by jacking the tire up and grabbing tire, shake it from top to bottom and left to right. Shouldn't have play there.
Rotate tires front to rear.
The very last thing you should do is mess with the stabilizer. It will mask the rear issue.
On a softer note if you're my uncle mike, stop drinking. Lol it will steer right lol. Just kidding