Genshin Impact is a Gacha game no doubt, with the most obvious tell being the Wish system where players roll the odds to see if they’ll unlock a 5-star character/weapon. Of course, people can throw money at this game and roll as many times as they want, but there is a pretty well-developed in-game loop for getting Primogems (the currency for wishing) without spending a dime.
There are just so many different ways to earn Primogems, and most if not all of them are redeemed by following that little red exclamation point in your menu. Whether it’s Achievements, the Mail pop-up message, Journal Rewards, or more, it’s just a good idea to always check whenever that important message notification icon pops up.