Unfortunately replacing your drain tiles, and new waterproofing is the best option. Patching, or waterproofing from the inside allows hydraulic pressure to dislodge the coatings. Whereas on the outside the pressure pushes the waterproofing against footers, or walls. Somewhere I have seen a inside perimeter drain tile. Mounts up against the floor wall corner. Have no idea if it would work. I sympathize. Wish you the best of luck.