Is the helbore lasgun just trash or just Skill issue/build issue?

New to the game, only played today but put in a good amount of hours in and am level 10 so far. With that being said I seen videos of a Krieg build I wanted to implement so I got a helbore lasgun and ran missions with it but it feels so trash.

Doesn’t seem ideal for this L4D horde style game at all. It ends up getting me killed because how weak it is and how quick it is to get rushed or mowed down by a heavy weapon brute.

Played one mission with the combat shotgun instead and it was like night and day, damn near has the same range and can get one shot kills from a far. Especially with the tougher elite enemies, I’m mid range and can kill them with just 1-2 shots. Meanwhile the slow lasgun does the same but with x2 the amount of time it takes.

I want to give the gun a shot because bayonet does feel fun to use sometimes but even then it just feels more like a crutch than an actual good weapon to use