Steamdb is useful for a couple different reasons. It shows you more stats than just the number of players, it also shows the price history and what’s on sale (you can filter only the games at a historic low price for the best deals), when a game was released and last updated (great to see if it’s an abandoned game), some other cool stuff that players might like to check before buying a game.

I usually go there during the seasonal sales and it helps save me money after seeing that most games have been that price before so it can probably wait until I actually have money haha