u/Glittering_Oil_6546

We are first time homebuyers and have concerns regarding the foundation of this home. The marks in the first three photos are scattered throughout the basement on the upper and lower portions of the cement on the walls. They slightly bump out like it may be metal behind the patch. Our question is, was this a way of pumping water out of the basement or water away from the foundation of the house? And

if it is how concerned should we be if it’s been properly fixed?