It is in these moments when you realize who your friends really are, just like you who help yours, God bless you and may you solve this problem quickly.
-A recommendation is that if the area where the wall is located does not have good drainage, at the beginning of the wall at ground level place pieces of 4" PVC pipe along the entire wall, every 2 meters (depending on the length of the wall) so that the water can pass through and the structure does not collapse again, or you can make a channel about 30cm deep about 20cm away from the wall.

• I recommend you any of these options as I have been through it... success with your work my friend.