High terrain has always provided a tactical advantage. As you use high ground, you obtain several advantages, including a greater view on your opponent. Unfortunately, this increases their chances of striking your skull.

Advantages when using Highground in 1v1 lol

Highground gives you a more advantageous vantage point on your opponent. Using it, you may shoot on them from a greater vantage point, even over cover. Highground also allows you to better watch your opponent's moves.

Risks 

Depending on the angle and distance, the opponent has a better chance of assaulting you. This does not imply that the opponent will be technically capable of a headshot, merely that he will have the option to do so. Higher land offers greater shelter, which, when utilized appropriately, mitigates most of the danger. The opponent has little chance of attacking you in places you don't reveal.

Getting the High ground

Constructing a ramp is the easiest and most efficient technique to gain access to higher terrain. Construct a wall in front of a ramp to provide shelter if a danger emerges. If you are being shot from various angles, utilize barriers to hide behind. If you are not tall enough, construct a skyscraper no taller than three stories. If you're going higher, arrange an escape path in case you get shot down.