1- If you want to better your chances in not getting shot while running, try to swing your pan around you might not get shot.
2- If you want to protect or make your teammate recover use smoke grenades.
3- If you want to kill people who are inside a building explode the whole place using frag grenade.
4- If you’re using a sniper use suppressors on them.
5- Use an extended mag on the Tommy Gun it will turn it into an amazing weapon capable of fitting 50 whole rounds.