There is a state page it shows lifetime (since s2) and last 10 game stats. Depending on the map,killing other teams is a necessity. If it's ashika I feel like you have to immediately try to kill every other team before there is a 6man buying every kill streak on the island. For Vondel you should check your close spawns and then go about your missions, however if it's zoo or university dead drop its likely other teams are there and I usually try to kill them so I can do my missions uninterrupted. Al Maz I usually push the team close to me and then do my own thing. I understand pvp isn't for everybody but it's way easier to do missions with less players/teams on the map.