Similar experience here, my university helped people form study groups near final exams and had a "homework club", where final year and grad students were paid to help first and second year students with their assignments for a couple hours a week, and people were encouraged to meet each other in that club and find "study buddies" (but no-one actually called it that, because ugh)

Covered everything from the programming to the multivariable calculus and data science (much harder to find students confident enough to teach others for those last two though)