Why nodemailer smtp don’t access my account?

I made a mail service and wanted to use smtp for mailing, but when I try to log in, the login or password is not accepted, although they are 100 percent entered correctly. What should I do?

import nodemailer from "nodemailer";
import { config } from "dotenv";
config({ path: "./other/.env" });

const SMTP_HOST = process.env.SMTP_HOST || "smtp.gmail.com";
const SMTP_PORT = process.env.SMTP_PORT || 587;
const SMTP_USER = process.env.SMTP_USER || "smpt user is not working";
const SMTP_PASSWORD = process.env.SMTP_PASSWORD || "smtp password is not working";
const SITE_URL = process.env.SITE_URL || "site url is not working";

class MailService {
    transporter;

    constructor() {
        this.transporter = nodemailer.createTransport({
            host: SMTP_HOST,
            port: SMTP_PORT,
            secure: false,
            auth: {
                user: SMTP_USER,
                pass: SMTP_PASSWORD
            }
        } as nodemailer.TransportOptions);
    }

    async sendActivationMail(to: string, link: string) {
        await this.transporter.sendMail({
            from: SMTP_USER,
            to,
            subject: "Account's activation on " + SITE_URL,
            text: '',
            html:
                `
                    <div>
                        <h1>For actovation click on this link</h1>
                        <a href="${link}">${link}</a>
                    </div>
                `
        })
    }
}

export default new MailService();

Error: Invalid login: 535-5.7.8 Username and Password not accepted. For more information, go to535 5.7.8  https://support.google.com/mail/?p=BadCredentials x28-20020a056512131c00b0051979e3a586sm1546821lfu.266 - gsmtpat SMTPConnection._formatErrorat SMTPConnection._actionAUTHCompleteat SMTPConnection.<anonymous>at SMTPConnection._processResponseat SMTPConnection._onDataat SMTPConnection._onSocketDataat TLSSocket.emit (node:events:513:28)at addChunk (node:internal/streams/readable:324:12)at readableAddChunk (node:internal/streams/readable:297:9)at Readable.push (node:internal/streams/readable:234:10) {code: 'EAUTH',response: '535-5.7.8 Username and Password not accepted. For more information, go ton' +'535 5.7.8  https://support.google.com/mail/?p=BadCredentials x28-20020a056512131c00b0051979e3a586sm1546821lfu.266 - gsmtp',responseCode: 535,command: 'AUTH PLAIN

I tried all ai chats, not helped.