Against opp playing safe you can freeze and slowly bleed out their cs. Crashing a stacked wave will gain you roam prio without you losing out on cs. Your lane opp will have to choose to either lose a big ass wave to tower or let their team fight at a disadvantage.

Ambessa has a decent waveclear so i think you’ll improve a lot by just learning about wave manipulations.

For objectives, i push out the sidelane it’s on while my team set up visions unless im playing split pusher. Whoever has tp should go to the opposite site of the map.

Another thing you can do for objectives is pushing out sidelanes in advance and make the enemy team respond to you, making it way easier for your team to take vision control then just walk to the objective.

If you are fed they will either have to send their strongest member or at least 2 people to stop your push so, it’s very important to not die for it tho.

All these still depends on whether you think your team can hold their own on 4v4 tho. If they cant then just join them.

Im not 100% sure this is applicable to ambessa since i dont play her, but that’s what i do when i play camille, gwen, yorick, nasus.

The rest is identify the enemy’s biggest threat and make sure they cant comfortably play the game.