Hi @faisal_4 ,
In Adobe Analytics, we talk about Visits. The easiest way to understand visits is to review this page:
https://experienceleague.adobe.com/docs/analytics/components/metrics/visits.html?lang=en
Visits can get interesting, because it's possible to close your browser, come back, and still be considered within the same visit. So, you'll want to take a look at everything on that page, and even the caveats.