多くの人に

by many people

→ 多く
phrase Rare #21,857
by many people In these examples, に marks many people as the agent of a passive verb. Depending on the verb, it can also mean “to many people.”
JA: 多くの人に知られている場所です。
EN: It's a place known by many people.

彼の顔は多くの人に知られている

His face is familiar to many people.

彼は多くの人によく言われている

Many people often tell him that.

そんなことするべきではなかった多くの人に言われるだろう

Many people will probably tell me that I shouldn’t have done that.

その結果多くの人にとって驚きだった

The result came as a surprise to many people.

彼は多くの人に同じ質問をした

He asked many people the same question.

推理小説多くの人に愛されています

Mystery novels are loved by many people.

多くの人に助けられています

Many people are helping me.

— Article 15 (2019)