Annie No Carry

Hello everyone, So I've recently had the pleasure of playing a game where I couldn't carry with a fed Annie. I have won 4v5's before with just her raw power but yesterday I had a game that seemed unwinnable with a full team. My team: Annie,Lee,Jinx,Morgana, yasou Their Team: Shen,Warwick, graves, veigar, Braum. It got to a point where basically their team was indestructible. Also that our adc was very weak and and had an inexperienced Lee sin jungle. So I was the main source of damage. My build consisted of ludens, magic pen boots, deathcap, and the void staff. What could I've done to carry such a weak team against a mainly 70%tank/30%damage team?