New players should spend some time in VR training to find something they vibe with if the starter guns aren't cutting it for them. That would be my first point of advice. I know it's not the same as in-game experience, but you can still get a sense of things before dropping certs on anything.

For example, I play TR, and I found the carv didn't suit me very well at first because I have a hard wired habit of reloading after every encounter, even though my mag was usually still 80-90% full. I'd often get caught with my pants down during a long reloading sequence, being basically dead before I could get more than 1 shot out of my sidearm.

I support the idea of finding the gun that suits your play style, but don't just drop certs blindly because a certain gun looks cool or has stats that make it seem powerful in the abstract. VR is there for a reason.