How can I change this code (Review)?

Question

Python

The main task is to write an SQL query in sqlite to get movies and
all related entities, transform the data and load them into
the movies index in Elasticsearch.

Answer 1

for (var i=0; i<arr1.length; i++) {
    for (var j=0; j<arr2.length; j++) {
         if (arr1[i].id == arr2[j].id_user) {
             arr1[i].sport = arr2[j].sport;
             break;
         }
    }
}

Answer 2

let newArray = [...arr1, ...arr2];