The short answer is no. Your ads need a place online where your customers go after clicking on your ad on Google, and that is your landing page. Your landing page is like your office, or your physical store where your clients go to see you when they need you. It is the same with an online business.
However, you do not need a huge website full of features. The most important thing about your landing pages is that they are optimized for Google Ads and that they are relevant to your ads, you, and the services and/or products that you offer.