LF Weapon recommendations for Support Player

Heyo, just bought the game yesterday and decided that i wanna play Support. Now i need some weapon recommendations.

I played fps games in the past a tiny bit and i know i am not build like a close-quarters Jackrabbit.

I like gunfights that start somewhere around 30-40m and end when i cant hit the enemy no more.

Also i like the idea of being able to deny areas basically gain area control.

From what i could gather online this seems to be more of an LMG based thing (maybe DMR?).

I played around with LMG's and so far my favourite would be the "KTS100 MK8". I was able to successfully do all the above mentioned stuff with it.

Is there maybe a weapon that can so this aswell, that i might have overlooked or have yet to unlock?

Also how to Augment LMG's, especially the KTS100 MK8?

Thank you very much for reading thus far, have a great day. <3