Data Synchronization

I’m here to ask help for an issue I’m facing regarding NextCloud. I am working in a company and they have shared the company data via website nextcloud). If we need any file we need to go to the website to the specific folder and download it. This way just started some weeks ago.

However, previously we had a nextcloud folder in the desktop (etc) and we can access the data (which was automatically sync) with the data in the next cloud website.

Can you please let me know how I can get that folder back which automatically sync the data with the website?

(i.e. if I created a folder in the nextcloud local folder, it should sync with the website (same folder).)