Tbh some games are a lost cause, if your teammates lose every 1v1 or keep making crazy single file solo rushes then there’s little you can do. But some games the teammates are going negative because we aren’t supporting them. I’m sure you can think of games where you’ve died a bunch to power weapons or because you’re being constantly 2v1’d. Some games you feel unstoppable and everything falls into place and usually we see it as just a good game, but a lot of the time these are the games where our teammates are facilitating our playstyle the most, or at least the teamwork is flowing more effortlessly.
When I’m playing my main goal is to secure the power weapons and map control. I don’t have to have them but I at least want my team to have them. If your teammate is passive with them then that’s fine, but if they’re aggressive then you should also be aggressive because they could lose the weapon doing that. On some maps that’s an actual death sentence like when the enemy gets two Snipers in their half of the map. It’s unacceptable behaviour to lose a power weapon in the enemies half of the map in most circumstances and seriously hurts the team.
Neutralising the better players also helps. If your team can’t handle a certain player, but you can then you need to force more matchups against that player and make that players life as difficult as possible. Your team won’t be dying if their best player is in your pocket.
Thing for me is like sometimes you can challenge a 1v1 and get a kill, while this is happening two of your teammates die. You’re plus 1, but your team score is now -1. If you recognise things like this, or certain teammates are particularly struggling this game then it’s good to be mindful about fulfilling a more supportive role to them as the game plays out. Keeping your team alive is important to not keep losing score trade offs. Solid map control and keeping good sightlines always makes the game easier.
Sometimes I’ll find that I have to drop my usual strats to fill a hole the team are creating for themselves. Are they not covering flanking enemies, are they overextending, I’ll just try to sort out what is going wrong. Usually I like to flank and cause a ruckus behind enemy lines so my team get free shots on the enemy while they’re focusing on me. But if you’re flanking and your team are dying to aggressive enemy pushes, then you might be getting kills here and there and staying positive but you aren’t helping the team in the numbers department for head on fights if while you’re doing this everyone else is losing their battles.
Also I use my mic in ranked most the time, even when my team aren’t. I’ll call everything out, I’ll use the pings to highlight enemies, remind them of weapons or if I just think they are focusing on the wrong areas. I’ll even sometimes encourage strategies like “push push push”, “get rockets I’ve got you covered”, “stay alive, back up, I’ve got you”, “someone needs to come overshield with me”, “probably spawning long hall, watch out”. Just little basic strategy things they might not necessarily be aware of that I am in the moment.
Sorry if none of that is helpful, that’s just my usual thought process in games.