Brick repair or rebuilding the wall
Since the joints wear first, most brick walls only need repointing and a few bricks swapped out, and that's what I'll recommend when the wall is still straight and solid. Rebuilding makes sense when a section leans, the bricks are crumbling across the face or the cause can't be fixed with the wall standing. Out in the yard, that's when we talk about new retaining wall construction or trading a heaved brick drive for new driveway pavers.

