Seven Deadly Sins is really good and funny!! But if you want something a bit more serious, I'd recommend Monster, Death Parade and Madoka (the last one might seem like a girly girl anime, but it's not, dont be fooled by the pink dresses, ruffles and magic girl shit)
OH! There's also Watamote, which is hilarious, and it can be v relatable if you are a shy person and into geeky stuff