You must have a token from the bot. And write the token to .env
https://core.telegram.org/bots/api#getupdates
https://api.telegram.org/bot{BOT_TOKEN}/getUpdates?offset={int}
for work method /getUpdates
https://core.telegram.org/bots/api#deletewebhook
https://api.telegram.org/bot{BOT_TOKEN}/deleteWebhook