Again, your position is nothing but an irrelevant appeal to accomplishment.
You'd say the same thing if Trump managed to build all but say, 5 miles of wall. Your position amounts to Well, he didn't build that five miles so he failed to build a wall.
Or, that building a complete wall would take say 10 years to complete and he got four years of construction done towards it and you claim that as a failure.
Walls completed helped secure the border, that I clearly demonstrated and sourced. That Trump didn't finish the entire wall doesn't make what he did finish a failure. It isn't like a high-speed rail line where 20% got completed and is unusable because the other 80% never got built. A border wall doesn't work that way. It isn't an all-or-nothing proposition.