Gear can be purchased in-game to make your character stronger. These items can be purchased at any time while in a match. However, each hero can only hold up to six items.
There are 96 items in Mobile Legends. They are split into five categories – Attack, Magic, Defense, Movement, and Jungle.
Luckily, choosing which item to buy is easy in Mobile Legends. If you want to know what the pros do, you can choose Pro Builds and rely on their experience. The game will automatically bring up the items you need to buy in a match.

Items available to buy appear as two glowing golden circles at the top right-hand corner of the screen. The top circle is the item that is currently prioritized, while the item below is next in the priority queue.

To manually adjust your item list, you can open the shop by clicking the rectangular bar with the dollar sign in the top right-hand corner of the screen.

In tougher games, adapting to the enemy and buying the right gear to suit the situation is key to winning.
For example, when facing a Mage heavy team, heroes would benefit more from buying gear that is resistant to magic damage compared to physical damage. Learning and buying the right gear is key to winning matches.