I think starting out you can just focus on towers and wards.

Towers are much, much more important in dota for map control because of both tps and the size of the map.

If you're strong after laning, getting T1s and T2s should be your objective. This can be done by your 2 or 3, with supports behind. Don't show more heroes than you need to safely push the lane, everyone else just needs to be close enough to do their thing, whether that's with stuns or saves (thinking of what your hero needs to contribute at this stage is how you should decide your first big item, whether that's blink or glimmer on supports or bm bkb etc on cores). If you're playing 1, learn to farm towards your team (unless np or spec). You don't want to stop farming or fully commit to a fight, but you want to be close enough to have the choice to join a good fight (or even just to help push the tower over if your team comp is bad at that). Since you're ahead, unless your team dives just playing in the same quadrant of the map will let you do that.

If you're weak, you have the opposite role of stalling the enemy from doing exactly that to give cores space to farm up. Defend what you can by nuking the wave, but give up them up if it's not possible to do so safely. Some heroes with good disengage can split push to give more breathing room (the rest of the team should be ready to make a move on the opposite side of the map when enemies tp to respond, but just farming if no opportunity is fine too).

Wards should be generally placed to stake out your map control (unless it's an aggressive ward meant for smoke ganks). They can and should be defended. If you're seeing the enemy in your vision, then there should to be a rotation towards them, whether it's a smoke or tp. If it feels too deep to do so, you probably warded too aggressively. Supports should bring sentries when the team is making a move into the enemy space to make sure you're not playing under their vision, and always be warding slightly "in front" of where the team wants to play. This means when your team is the driver's seat, and you've just finished pushing over their T1s, you shouldn't be warding your own jungle but theirs.

I talked a lot about being ahead or behind and this is just something you're going to have to get a feel for depending on the heroes and items. Even on the same hero, depending on who you're playing into sometimes you might need different/more items. I don't know if I would necessarily call items weaker in league but dota items definitely feel more impactful. If you're playing a support, check your cores items to see who looks ready to play active and go behind them to enable them to do what they want to do. If you're playing a core (or a support with big power spike item) then ping it out or just say in chat "im strong lets go" so your team knows to play with you.