If i want to have an estimate of the number of people who visited my website, which metric should i use?

If you want to have an idea or estimate of the number of people who visit your profile or website, you may use Google Analytics.

Google Analytics helps to collect and aggregate the data on different levels, or you may call it 'units of analyses' so you may be able to identify the correct level for your analysis.

It may also contribute to bring traffic to your website which may include direct visitors, search visitors and referral visitors.

well cos like a ds it doesn't really die out, unlike for example, fifa, they always come out with a new version, so lets say your fifa 18 is charging you to update the teams and stuff, so, if messi were to go to real madrid (never gonna happen) it would switch messi to the other team, until the owners of fifa come out with fifa 19, then the game would eventually stop updating, and back to the ds, it doesn't really stop working after sometime because there's lots of things that it could be used for, and idk if u know what i'm saying, but long story short, samsung, represents the ds, if they still work, and people love them but not the new version, the old version still works, so they don't really force people to buy new phones, get me?