Firebase not read whith key random - node.js

Question

I tried a firebase read script,
if the ket is of the type 0 1 2 3 4 reads, but if it is ramdom type (M5ppDoMZ8lnqBtT8Zme) it is not read and I don't understand why?
import {gamesRef} from './firebase'
import { GameTypeEnum, PiattaformaEnum,nuovofilm } from './models/game'
export default {
firebase: {
games: gamesRef.orderByChild('titolo')
//games : gamesRef
},
data() {
return {
gameTypes: GameTypeEnum.properties,
gamePlatforms: PiattaformaEnum.properties,
nuoevo : nuovofilm,
games : gamesRef,
film: gamesRef,
// gam : gamesRef.orderByChild('titolo'),
fields: ['Indice','titolo', 'regista','locandina', 'anno','Modifica','Cancella','piattaforma'],
//fields: ['titolo', 'autore', 'anno', ''],
datas : [1,2,3,4],
// fields: ['first_name', 'last_name', 'age'],
items: [
{ age: 40, first_name: 'Dickerson', last_name: 'Macdonald' },
{ age: 21, first_name: 'Larsen', last_name: 'Shaw' },
{ age: 89, first_name: 'Geneva', last_name: 'Wilson' }
],
newGame: {
Titolo: '',
SoftwareHouse: '',
Tipo: GameTypeEnum.FPS,
Piattaforma: PiattaformaEnum.PC
},
<b-table striped hover :items="games" :fields="fields">
<template v-slot:cell(indice)="data">
{{ data.index + 1 }}
</template>
<template v-slot:cell(locandina)>
<img :src="valore" width="100" />
</template>
<template v-slot:cell(Modifica)>
<button type="button" class="btn btn-warning">x</button>
</template>
<template v-slot:cell(Cancella)>
<button type="button" class="btn btn-danger">y</button>
</template>
<template v-slot:cell(index)="data">
{{ data.index + 1 }}
<b-btn size="sm" variant="warning">X</b-btn>
{{ data.index + 1 }}
<b-btn size="sm" variant="warning">y</b-btn>
</template>
94/5000
I have also tried with the v-for the problem seems that it doesn't understand what it has to do with key random
Many thanks in advance