How to finish out games?

Rumble main, having trouble figuring out how to finish out games when I either win lane or at least go even (assuming I get camped). Not saying I win lane 100% of the time, but even when I smash I seem to have A LOT of teammates in gold who don't fundamentally understand basic solo queue principles.

Mistakes I notice my teammates most commonly making which make it hard for me to win the actual game: Not warding properly, pushing into enemy territory unnecessarily without vision / rez timers or when the enemy has an advantage, not protecting easily defensible towers just to back and buy before ensuring the wave is pushed out, randomly grouping to fight mid after the tower is gone and there's nothing to protect while our sidelanes are pushing towards us rather than away (this is the biggest and most annoying one, especially when we're in a position where I or someone else on the team can push to snag a free tower due to enemy team's positioning, yet my team will engage outnumbered rather than carefully stalling while we get the free tower), etc.

It's just really annoying. What should I look to capitalize on when playing with unreliable uncoordinated solo queue teams? Not all of my teams are like this, but enough to be a nuisance and hold me back since I don't seem to know how to play around it. Should I just group with my team whenever they gather even if it's unneeded, since I can't guarantee they won't engage? How should I generally use equalizer in solo queue without coordination?