No there's no need to install a tracking code on your website.

However, installing a tracking code on your website is necessary for collecting and monitoring visitor data, performance, and user interactions.

By using the Sid Pixel through Google Tag Manager, you can easily implement a tracking code without any advanced coding skills or a developer. This code is mainly used in order to offer retargeting capabilities i.e. making sure that people that are visit your website are seeing your ads as well.

Follow our guide here: Implement Sid’s Pixel (Google Tag Manager).