to bring sb / sth to a lower social or economic level, a lower standard of behaviour, etc.; to make sb feel weak or unhappy
drag sb / sth down (to sth)
to bring sb / sth to a lower social or economic level, a lower standard of behaviour, etc.
If he fails, he'll drag us all down with him.
drag sb down
to make sb feel weak or unhappy
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition