MongoDB send variables to Database in javascript

gistfile1.txt

{
  
  "userid": {
    "$oid": "613dfcca7e7e2014c12dfeef"
  },
  "attach": "[\"https://image.yourwebsite.com/be/images/{dateyear}/{datemonth}/finance_analysis.webp\"]",
  "title": "{link}, {DEĞ %}",
  "description": "{link}, {DEĞ %} {1-AY DÜŞÜK}\n\n{OSİLATÖRLERİN RATİNG'İ}{ADX}\n\n{MÜTHİS OSİLATÖR}{ATR}{CCI20}\n\n{MACD SEVİYESİ} {MOM}{RSI14}\n\n{STOKASTİK K} {STOKASTİK D}\n\n{AROON ÜST} {AROON ALT} {BOĞAAYIGÜCÜ}\n\n{SAR}{BHO10}{HAREKETLİ ORTALAMALAR RATİNG'İ}",
  "price": 0,
  "color": "[]",
  "trademark": "",
  "language": "tr",
  "category": "[\"{link}\",\"analiz\"]",
  "productstate": "Published",
  "createdat": {
    "$date": "{date}"
  }},

or 


let mongo = {
		userid: {
			$oid: '613dfcca7e7e2014c12dfeef'
		},
		attach: '["https://image.bitfinicon.com/be/images/2022/1/finance_analysis.webp"]',
		title: '{Sembol}, {Açıklama}',
		description:
			'{mongosentences}',
		price: 0,
		color: '[]',
		trademark: '',
		language: 'tr',
		category: '["{Sembol}","analiz"]',
		productstate: 'Published',
		createdat: {
			$date: '{date}'
		}
	};