This guide explains how you can change your weapons in Split Gate. Unfortunately, you cannot get a weapon of your choice at the start of the game, but you can change it once you enter the game stage by getting weapon spawns.
The first thing you will need to do is to go to the locker option.
Every time you start a game, you will be given a carbine or an assault rifle. Split Gate provides the players with weapons according to the stage they are playing. You can only get other weapons in the game through weapon spawn, which is a circle-like thing on the ground.
If you already have that weapon in the weapon spawn, you can walk away by leaving it. However, when you see any weapon you don’t already have, you must get it.
In this way, you can get other weapons in the game easily.