I feel like the disclaimer/warning needs to be put out there, much like the early message that kills aren't everything in turf war, so too is your endgame score not everything either. Don't use that as the greatest thing you're taking into account when it comes to performing well or not, because that's not very well reflective of how any single match works and doesn't encompass many successful strategies. Good for you and your 1000+ points but that's no immediate indicator of success.
Some of the better rounds I've had involve getting into a particularly good spot and then put the focus on area denial and defense rather than continuing to needlessly push forward and get counter-punched or allow a jailbreak. Since that means a lot of time patrolling areas already covered in ink, it doesn't reflect as strongly in the final scoreboard but is still crucial in securing the victory. Likewise in the first game, my favorite tactic with the Sploosh involved just being more of a nuisance, sneaking into back lines and not necessarily killing a lot, but being a big distraction for the enemy and easing frontline pressure for the rest of our team to move forward. Again, not much scoreboard glory but still an effective tactic.
When it comes to turf war, especially with randoms, my personal advice would be not to focus too hard on w/l or looking at what your (obviously inferior) teammates did, but just judging the feel of your own performance and thinking about what more you could learn or adjust to to improve your personal play. It's the game's most casual mode.