fodijal - Your Adventure Rank in Genshin Impact is a key factor in determining which parts of the game are available to you. Fortunately, almost everything you do from the beginning of the game will grant you some Adventure Experience Points. If you're at all familiar with RPGs, you probably already know that accumulating Experience Points is what allows you to level up.

Any time you receive Adventure Experience Points, you'll get an onscreen run-down of how much you just gained and how much you still need to attain the next Adventure Rank.

xodor - in Genshin Impact not everything is as easy as you might think at the first levels.
As your Adventure Rank increases, so will enemy difficulty levels (both ordinary and boss); maximum character and weapon levels. As the levels increase, the process of getting 5-star loot drops becomes more difficult. At least it turned out to be mega difficult for me.
But I found a way out. With the Lfcarry Boosting Service, I was able to raise my Adventure Rank in Genshin Impact https://lfcarry.com/genshin as much as possible. It was also very convenient for me that I could watch the PROs fulfill my order. I learned a lot from them.