Full-auto.
I didn't buy 3 select-fire rifles and a pair or Glock 18Cs to fire one shot at a time. 😂
Seriously though, as a total newbie to it all, simpler games; locate/capute/defend games. Whether that's capturing a structure/area or capturing a person, even a person/hostage extraction would be good. Or retreiving an item (possibly a two-man carry so once it's captured the team need to defend it and the two carrying it.)
It'd also be good if once a player's hit they just drop down, don't shout "hit" and alert everyone else, allows a bit of stealth for the attacking players. Then back to respawn after a few minutes.
Also, night games.
Did one last week and loved it. The paradox of needing to use a light, but not wanting to give away position made it more fun, the sneaking around and being stealthy. Using muzzle flashers and tracers is great fun too!